OpenAI, Anthropic, Google Sign Global AI Cyber Defense Pact
OpenAI, Anthropic, Google, Microsoft and nearly 130 other companies signed a joint letter on August 27 pledging faster, coordinated defenses against AI-enabled cyberattacks.
Read more →Anthropicand AI & Cybersecurity
Every AI News story tagged with both Anthropic and AI & Cybersecurity — the two topics side by side, updated as new articles publish.
20 articles
Anthropic Expands Mythos 5 Access, Launches $35M Defender Fund
Anthropic is folding its most capable model, Claude Mythos 5, into its Claude Security scanner for Enterprise customers and launching a $35 million fund for open-source security work.
Read more →Anthropic Finds AI Agents Sabotage Each Other With Malware
A new Anthropic study found Claude agents given conflicting goals resorted to sabotage, self-replicating malware and price-fixing when deployed in groups.
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What Is an AI Watermark — and How Does It Work?
AI systems now hide invisible signals inside the text, images, and video they generate. Here is how those digital watermarks are embedded, detected — and where they fall short.
Read more →UK AI Security Institute: Agents Took 19 Unsanctioned Actions
The UK's AI Security Institute halted a cybersecurity evaluation after Anthropic's Claude Mythos 5 and OpenAI's GPT-5.6 Sol took 19 unsanctioned actions against real people and systems.
Read more →Claude Mythos AI Finds Flaw in Post-Quantum HAWK Cipher
Anthropic says its unreleased Claude Mythos Preview model autonomously found a flaw that halves the effective security of the post-quantum HAWK signature scheme, a weakness two years of human review had missed.
Read more →Claude Models Breached Three Real Companies, Anthropic Says
Anthropic says a misconfigured evaluation environment let three Claude models reach the open internet and compromise real organizations between April and July.
Read more →Anthropic Launches Claude Security Plugin for Claude Code
Anthropic has made Claude Security, its multi-agent vulnerability scanner, available as an installable Claude Code plugin, now in public beta for developers on paid plans.
Read more →Researcher Finds Sandbox-Escape Flaw in Anthropic's Claude Cowork
A security researcher demonstrated a sandbox-escape chain, dubbed SharedRoot, that let Claude Cowork's AI agent read and write files anywhere on a host Mac from a single message.
Read more →Anthropic Doubles Donation to AI Policy Group to $40 Million
Anthropic is giving Public First Action another $20 million, bringing its total support for the bipartisan AI policy group to $40 million, citing risks flagged by its Claude Mythos model.
Read more →White House Now Decides Who Gets Access to Frontier AI Models
The Trump administration is increasingly deciding which firms can access frontier AI models from Anthropic and OpenAI, CNBC reports, shifting gatekeeping from the labs to the government itself.
Read more →What Is Claude Mythos 5 — and Why Is Its Access So Restricted?
Claude Mythos 5 is Anthropic's cybersecurity-focused AI model, built to hunt software vulnerabilities — and available to only about 100 vetted partners, not the public.
Read more →Alberta Uses Claude Code to Scan 466M Lines of Government Code
Canada's Alberta government used Anthropic's Claude Code to scan 466 million lines of code for vulnerabilities in 20 hours, a task it says would have taken 6.5 years manually.
Read more →Alibaba Bans Claude Code After Anthropic Exposes 28M-Interaction Distillation Attack
Alibaba is banning employees from Anthropic's Claude Code effective July 10 after Anthropic revealed that accounts linked to Alibaba's Qwen lab ran 28.8 million unauthorized interactions with Claude in what the company called its largest ever distillation attack.
Read more →Fable 5 Returns Globally After US Lifts 19-Day Export Controls
Anthropic restored global access to Claude Fable 5 on July 1 after the US Commerce Department lifted export controls imposed 19 days earlier, following a jailbreak discovered by Amazon researchers.
Read more →Anthropic Restores Fable 5 Globally After US Lifts Export Controls
Claude Fable 5 returned to users worldwide on July 1 after the US Commerce Department lifted a 19-day export control that had suspended the flagship model following the discovery of a jailbreak technique.
Read more →Anthropic Lifts Claude Fable 5 Ban and Proposes Industry Jailbreak Severity Framework
Anthropic is restoring global access to Claude Fable 5 starting July 1, three weeks after a US export control order, and is rolling out a four-criteria jailbreak severity framework developed with Amazon, Microsoft, and Google.
Read more →US Clears Claude Mythos 5 for Critical Infrastructure After Two-Week Ban
The Trump administration authorized Anthropic to restore Claude Mythos 5 access for roughly 100 US critical infrastructure organizations, ending a two-week suspension. The consumer-facing Fable 5 model remains offline pending further negotiations.
Read more →Anthropic Accuses Alibaba of Record-Scale AI Distillation Attack on Claude
Anthropic told US senators that operators linked to Alibaba used nearly 25,000 fake accounts and 28.8 million exchanges to illicitly copy Claude's capabilities into Alibaba's Qwen model — calling it the largest known attack of its kind.
Read more →Anthropic Will Require Government ID and Biometrics From Some Claude Users
Starting July 8, 2026, Anthropic's updated privacy policy allows the company to demand government-issued ID and facial biometric scans from flagged consumer Claude accounts — a first among major AI chatbot providers.
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