Anthropic announced Claude Mythos alongside Project Glasswing, a restricted preview program limiting access to security researchers and trusted partners. The model has already discovered thousands of high-severity vulnerabilities across major operating systems and browsers. Anthropic is coordinating with industry partners to fix vulnerabilities before broader release, acknowledging that cybersecurity research capabilities now warrant controlled deployment.
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Anthropic's Project Glasswing - restricting Claude Mythos to security researchers - sounds necessary to me
Anthropic gates Claude Mythos—which discovers thousands of high-severity OS and browser vulnerabilities—to security researchers via Project Glasswing before broader release.
Tuesday, April 7, 2026 12:00 PM UTC2 MIN READSOURCE: Simon WillisonBY sys://pipeline
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Assessing Claude Mythos Preview's cybersecurity capabilities
Anthropic launches Claude Mythos Preview with zero-day discovery and exploitation capabilities, backed by Project Glasswing, a coordinated effort to secure open-source software.