CyberSecBrief

Curated cybersecurity briefings on active threats, vulnerabilities, and emerging risks


Daily Cybersecurity Briefing (25 July 2026)

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At a Glance

  • An unattended Hermes AI agent automated post-exploitation activity during an alleged breach of Thailand's Ministry of Finance.
  • Clop ransomware exploited CVE-2026-12569 in PTC Windchill and FlexPLM to deploy webshells and steal data.
  • A compromised maintainer account was used to publish trojanized mrmustard 0.7.4 on PyPI, stealing SSH and cloud credentials.
  • Russian group Laundry Bear exploited unpatched Zimbra servers to steal emails from government and commercial networks.
  • A hacker claims to have stolen data of 2 million Origin Energy customers and threatens to leak it.

Editorial Analysis

Today's briefing shows agentic AI delivering comparable technical capabilities on both sides of the fence, with authorisation as the primary differentiator. Hermes operated unattended in "YOLO" mode against Thailand's Ministry of Finance, enumerating hosts, identifying privilege escalation paths, and cataloguing internal file shares without human approval at each step. On the same day, Kimi K3 agents were credited with discovering 19 Redis zero-days and building an authenticated remote code execution chain in under 30 minutes, while Aikido's pentest agents identified eight high-severity NodeBB vulnerabilities during a six-hour source review. The capability—rapid, autonomous discovery and exploitation of real weaknesses—is increasingly comparable whether exercised by security researchers or attackers; what differs is authorisation and intent.

A separate theme running through today's events is attribution. Google introduced a standardised cryptonym naming system for threat actors to improve consistency in how groups are tracked and discussed. However, better naming does not solve the harder problem of attribution when intrusions — like today's breach of Thailand's Ministry of Finance, where the initial access vector remains unknown — lack sufficient forensic evidence to determine responsibility.

Highlights of the Day

Clop Ransomware Exploits Windchill and FlexPLM Flaw for Data Theft

The Clop ransomware gang is exploiting CVE-2026-12569, a critical deserialisation flaw in PTC Windchill and FlexPLM, to deploy JSP webshells and exfiltrate data. Attackers are sending extortion emails from previously compromised accounts to hundreds of employees at targeted organisations. PTC released patches on 17 June, and CISA has added the flaw to its Known Exploited Vulnerabilities catalogue.

Trojanised PyPI Package Steals SSH, Cloud and Kubernetes Credentials

Attackers compromised a maintainer's GitHub account to publish mrmustard 0.7.4, a poisoned version of Xanadu's quantum computing library, directly to PyPI. On import, the payload steals SSH keys, AWS credentials and Kubernetes configs, then installs cron, shell and Python startup persistence mechanisms. The malicious code targeted research and HPC environments, also collecting SLURM job data and GPU inventories before exfiltrating everything to an attacker-controlled server.

Europol Coordinates Takedown Targeting Extremist Network "The Com"

Europol supported a multi-country operation in June and July 2026 against online content linked to "The Com," a loosely organised nihilistic extremist network. Investigators from nine countries referred roughly 4,340 URLs for removal, targeting propaganda, grooming material, and content depicting self-harm and violence aimed at minors. The action forms part of Project COMPASS, coordinated by Europol's European Counter Terrorism Centre.

Source: Europol

AI Agent Runs Unattended Attack on Thai Finance Ministry

Researchers found an autonomous AI agent, Hermes, running in unattended "YOLO" mode to enumerate Thailand's Ministry of Finance network via exposed staging server directories. The operation staged a custom Go implant named Hades, exploit code for multiple CVEs, and tools targeting Hadoop, mail, and web infrastructure. Agent logs showed privilege escalation scanning and file enumeration, though no evidence confirmed data exfiltration.

Source: Hunt.io

Redis Patches Multiple RCE Flaws Found by AI Research Agents

Redis released seven security updates on 23 July after researchers published proof-of-concept exploits for authenticated remote code execution across several versions. The flaws stem from a Streams use-after-free bug and a RedisBloom TDigest out-of-bounds write, both reachable via the RESTORE command. Researchers using Kimi K3 AI agents reportedly discovered the vulnerabilities, though Redis has not assigned new CVE identifiers and no in-the-wild exploitation has been confirmed.

Fake Corepack Website Tricks Developers Into Installing Malware

A site at corepack.org impersonates the Node.js Corepack tool to distribute an infostealer and proxyware to developers seeking downloads. Clicking through delivers a fake VPN installer that harvests browser data and SSH keys while enrolling machines as bandwidth-sharing proxy nodes. The site exploits Corepack's removal from newer Node.js versions and ranks highly in search results for related queries.

Source: Socket

Google Rolls Out New Cryptonym System for Naming Threat Actors

Google Threat Intelligence Group is introducing a unified naming schema, merging former Mandiant and TAG tracking systems into memorable two-word cryptonyms. The first word identifies the specific actor, while the second denotes origin or motivation, such as CASTLE for China or COMET for cybercriminal groups. Previous names remain searchable within the Google Threat Intelligence platform alongside MITRE ATT&CK mappings.

Daily Coverage

Developments
Clop Windchill ExploitationJadepuffer Autonomous RansomwareMrmustard Pypi CompromiseLaundry Bear Zimbra Exploitation
Vulnerabilities
CVE-2026-32194Microsoft Bing Images - (Critical)CVE-2026-12569Windchill Pdmlink (Critical)CVE-2026-46333Linux Bfedb589252C01Fa505Ac9F6F2A3D5D68D707Ef4 (High)
Threat Groups
PlayPlay is a ransomware group that has been active since at least 2022 deploying Playcrypt ransomware against the business, government, critical infrastructure, healthcare, and media sectors in North America, South America, and Europe. Play actors employ a doubleextortion model, encrypting systems after exfiltrating data, and are presumed by security researchers to operate as a closed group.APT1APT1 is a Chinese threat group that has been attributed to the 2nd Bureau of the People’s Liberation Army (PLA) General Staff Department’s (GSD) 3rd Department, commonly known by its Military Unit Cover Designator (MUCD) as Unit 61398.BluenoroffAPT38 is a North Korean statesponsored threat group that specializes in financial cyber operations; it has been attributed to the Reconnaissance General Bureau. Active since at least 2014, APT38 has targeted banks, financial institutions, casinos, cryptocurrency exchanges, SWIFT system endpoints, and ATMs in at least 38 countries worldwide. Significant operations include the 2016 Bank of Bangladesh heist, during which APT38 stole $81 million, as well as attacks against Bancomext and Banco de Chile; some of their attacks have been destructive. North Korean group definitions are known to have significant overlap, and some security researchers report all North Korean statesponsored cyber activity under the name Lazarus Group instead of tracking clusters or subgroups.SilenceSilence is a financially motivated threat actor targeting financial institutions in different countries. The group was first seen in June 2016. Their main targets reside in Russia, Ukraine, Belarus, Azerbaijan, Poland and Kazakhstan. They compromised various banking systems, including the Russian Central Bank's Automated Workstation Client, ATMs, and card processing.