The day's cybersecurity headlines from public sources, in one place. Search them, filter by theme or CVE, or show only vulnerabilities CISA has confirmed are being exploited. Every headline links to the original.
For my own read on what the news means for your business, see Insights.
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Hackers enlist Artex to scan GitHub repositories for exposed secrets
Agentic AI tools target downstream tenants using stolen credentials, according to Microsoft researchers.
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Companies struggle to know what normal looks like for AI agents
The inability to establish baselines is complicating the task of securing these autonomous tools, a new report found.
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Veeam warns of Software Appliance boot failures on AMD EPYC hosts
Veeam warned customers about boot failures affecting Software Appliance virtual machines (VMs) on hosts with AMD EPYC processors. [...]
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IMSI vs IMEI: What Your Phone Broadcasts and Who Can Read It
IMSI and IMEI are IDs your phone shares with networks. Learn how they differ, how attackers get them, and why rotating your IMSI blunts tracking. [...]
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OpenAI Launches GPT-6 Cyber After AI Helps Find 81 Firefox Flaws, 948 Linux Exploits
OpenAI on Thursday unveiled GPT‑6 Cyber, which it described as a major step forward in security research that brings together stronger cybersecurity capabilities with a step-change improvement in model alignment. The new model is "more capable at finding and fixing vulnerabilities, and far more…
Also covered by BleepingComputer
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In Other News: Trezor Implant, LLMJacking Bills Hit $1M, SAP Flaws Weaponized Within Days
Noteworthy stories that might have slipped under the radar: Synology warns about NAS ransomware attacks, Flowise ‘hello’ attacks, Chainalysis breach impact expands.
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CEO-spoofing scammers used AI to help steal more than $100 million, feds say
The U.S. is working on extraditing three suspects from Europe in a case involving more than $100 million in fraud from CEO impersonations.
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Chainalysis says breach exposed credentials for all customers
Blockchain intelligence firm Chainalysis says a recent attack on its systems and internal tools has exposed credentials and live tokens for all customers. [...]
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Why Europe's Freezer Hacks Spread So Far, So Fast
Europe's supermarket freezer hacks show how security issues can cascade across an industry, disrupting supply chains at scale.
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OpenAI Says New GPT-6 Cyber Model Hunts Flaws Without Crossing the Line
Rated Critical for cybersecurity, OpenAI’s new model beats GPT-5.6 Cyber at exploitation while staying in scope more reliably.
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US Agencies Urge Organizations to Harden Refrigeration Controllers
The recommendations come amid attacks targeting fridges and freezers in supermarkets and blood banks in Europe.
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OpenSSH flaw exploited in the wild just hours after disclosure (CVE-2026-123158)
An OpenSSH flaw that lets remote attackers log into passwordless accounts on Alpine Linux and other musl-based systems is being exploited, threat intelligence firm Previdian has warned. The flaw (CVE-2026-123158), nicknamed sshole by Wakefield researcher Özgün Kültekin, was fixed in OpenSSH 10.6p2…
Also covered by The Hacker News
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Grocery Giant Ahold Delhaize Estimates Financial Toll of October Cyberattack
The October incident will cut fourth-quarter sales by up to €250 million and has led Ahold Delhaize to lower its 2026 outlook.
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D-Link warns of multiple zero-days in DGS-3130 Series switches
D-Link shared mitigation measures for multiple unpatched security flaws affecting DGS-3130 series managed Gigabit stackable switches. [...]
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Researchers Find Residential Proxies on White House Network
In a month, 28 residential proxy services used 6 addresses, mainly between 5 p.m. and midnight, Eastern Time.
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OpenSSH Rushes Patches for ‘SSHole’ Authentication Bypass
On Linux distributions using musl libc without PAM, some accounts accept any password between 257 and 1024 characters.
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Microsoft Paint RCE Fix Now Available, but Windows Update Won't Deliver It
A fix for CVE-2026-83844, a remote code execution flaw in Windows Paint, is now in the Microsoft Store. Paint gets this fix only through a Store update, not through Windows updates. The fixed build, 11.2609.401.0, was the newest Paint build in all ten countries The Hacker News checked today. The…
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Malicious Browser Extensions Could Use Claude Dispatch to Run Code on Users' Computers
A browser extension that can run scripts on claude.ai could make Claude Desktop run code on a person's computer, researchers at Forever Security, an endpoint security company, showed in a test. The attack needs Dispatch, a Claude feature that lets people send tasks from their phone to Claude…
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CISA adds CVE-2026-19868 to KEV: SonicWall SonicOS SSLVPN Use of Single-factor Authentication Vulnerability
Federal patch deadline 2026-11-20. SonicWall SonicOS SSLVPN contains a use of single-factor authentication vulnerability that may allow a user with valid credentials for an alternate authentication method to bypass SAML authentication controls. Successful exploitation may also bypass SAML-enforced…
Also covered by CISA, SecurityWeek, The Hacker News, Help Net Security
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The Flood is Coming And The Pipes Were Already Full
An update on Athena, and some unsolicited predictions on what's coming next On Saturday, Dario Amodei published We Must Pace the Frontier. I agree with him. Go read it if you haven't. I've spent the summer looking at what these models find, and the gap he describes between what they can do and…
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Residential proxy traffic caught leaving the White House network
The White House network has been working as an exit point for residential proxy services, a setup that may open a path into one of the most closely guarded networks in the world, Layer3 Intel found. In a blog post, the threat intelligence firm reported that its proxy enumeration pipeline exited…
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OpenAI’s GPT-6 Cyber found 81 Firefox flaws earlier AI testing missed
OpenAI has introduced GPT-6 Cyber, a version of GPT-6 Astra trained to find software vulnerabilities, test how attackers could exploit them, and help develop fixes. The model is designed for authorized security testing of websites and applications. Vulnerability research and security testing…
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Sarajevo Cyber Security Summit 2026 puts the Western Balkans’ cyber resilience in focus
Cyber Security Summit 2026 in Sarajevo will examine the practical security questions organisations face when a supplier, network device or critical digital service fails: what breaks, who decides, and how quickly can operations recover? A serious cyber incident does not need to begin on an…
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OpenAI Model Wrote Its Own Network Code to Get Around Sandbox Restrictions
After its sandbox proxy failed, an internal OpenAI model crafted raw packets and probed AWS services trying to reach the internet.
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MetaMask says recent attack didn't affect wallet infrastructure
Cryptocurrency wallet provider MetaMask said a recent security incident has not affected MetaMask wallets or its wallet infrastructure. [...]