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Anthropic says Mythos has already found more than 10,000 vulnerabilities
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Anthropic says Mythos has already found more than 10,000 vulnerabilities

Engadget · May 23, 2026, 12:48 PM · Also reported by 1 other source

Key takeaways

  • The company has published an update about Project Glasswing, a month after its launch.
  • Santiago/Getty Images Anthropic has published an initial report for Project Glasswing, the cybersecurity initiative it launched in April that aims to prevent AI cyberattacks with, well, AI.
  • The company said that its partners' rate of bug-finding has increased by more than a factor of ten.

The company has published an update about Project Glasswing, a month after its launch.

Michael M. Santiago/Getty Images Anthropic has published an initial report for Project Glasswing, the cybersecurity initiative it launched in April that aims to prevent AI cyberattacks with, well, AI. The initiative is powered by Claude Mythos Preview, the company's unreleased model, which Anthropic says has already helped its partners find more than ten thousand vulnerabilities overall just a month after Glasswing's launch. In addition, it says most of its partners have "each found hundreds of critical- or high-severity vulnerabilities in their software" using the model.

The company said that its partners' rate of bug-finding has increased by more than a factor of ten. Cloudflare found 2,000 bugs, 400 of which are high or critical in severity. Mozilla previously reported that it found and fixed 271 vulnerabilities in Firefox, 10 times more what it found in an older version of the browser using another Claude model.

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