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Anthropic’s Claude Mythos Preview, Project Glasswing

techApr 8, 20266187

Anthropic released an unreleased Claude Mythos Preview that it says found thousands of unpatched software vulnerabilities across major operating systems and browsers. The company also launched Project Glasswing, a coalition with leading tech firms to use Mythos to find and remediate critical flaws before adversaries can exploit them. The announcements come days after Anthropic accidentally exposed 512,000 lines of its source code, intensifying scrutiny of its security practices. This matters because automated models that scale vulnerability discovery force faster industry coordination and change the cybersecurity risk landscape.

Key Highlights

Claude Mythos Preview found thousands of zero-day vulnerabilities across major OS and browsers.
Anthropic launched Project Glasswing to coordinate fixes with major tech companies.
Anthropic leaked 512,000 lines of source code days before these announcements.
3 sources
gnerdsec.comThe AI That Found Every Bug: Anthropic's Mythos, Project Glasswing, and the End of Security as We Know Itwww-cdn.anthropic.comSystem Card: Claude Mythos Preview [pdf]anthropic.comProject Glasswing: Securing critical software for the AI era

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