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The US government has restored access to Anthropic Mythos 5 for “trusted” companies

Feeds.4Sysops •IT News • June 27, 2026

The U.S. Department of Commerce has reached an agreement with Anthropic to partially restore access to its powerful Mythos 5 artificial intelligence model. This decision follows a two-week suspension triggered by national security concerns regarding the model's advanced capabilities. The government initially invoked export control authorities to block the system because it could potentially help actors identify and exploit software vulnerabilities. Source

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Anthropic's Claude Mythos Preview Sparks Cybersecurity Revolution Anthropic has announced the launch of Project Glasswing, utilizing its unreleased AI model, Claude Mythos Preview, to identify and exploit thousands of critical software vulnerabilities across major operating systems and web browsers. This model has demonstrated the ability to autonomously discover zero-day vulnerabilities, including a 27-year-old flaw in OpenBSD and a 16-year-old vulnerability in FFmpeg. The initiative involves over 40 partner organizations, including tech giants like Amazon, Apple, and Microsoft, who will use the model defensively to patch vulnerabilities before malicious actors can exploit them. Anthropic has committed up to $100 million in usage credits and $4 million in donations to open-source security organizations. The decision to restrict public access to Mythos is due to concerns about its potential misuse, as it can enable even non-experts to exploit vulnerabilities. The model's capabilities represent a significant shift in cybersecurity, as it can automate vulnerability discovery faster than human experts. With 99% of the vulnerabilities found still unpatched, the urgency for defensive measures is critical. 1402 sources 70

The US government has restored access to Anthropic Mythos 5 for “trusted” companies

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