What is Claude Mythos?

Anthropic's unreleased Claude model specialized in finding software vulnerabilities at superhuman speed, uncovering thousands of unpatched bugs.

Why isn't Anthropic releasing Mythos to the public?

To prevent hackers from using it offensively; they're sharing limited access via Project Glasswing with cyber firms and tech giants.

Who is involved in Project Glasswing?

CrowdStrike, Palo Alto Networks, Amazon, Apple, Microsoft, Cisco, Broadcom, Linux Foundation, and about 40 other orgs focused on system security.

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Anthropic's Secret Claude Mythos AI Digs Up Thousands of Unpatched Software Flaws

Anthropic's Claude Mythos just exposed thousands of unpatched vulnerabilities in popular software, some dating back 27 years. But they're not releasing it publicly—here's why that strategy could reshape cybersecurity.

theAIcatchup Apr 08, 2026 4 min read

Anthropic's Claude Mythos AI model interface highlighting a discovered software vulnerability

⚡ Key Takeaways

Claude Mythos found thousands of unpatched vulnerabilities, including 27-year-old flaws missed by humans. 𝕏
Anthropic's withholding it publicly, sharing via Glasswing with 40 orgs to arm defenders first. 𝕏
This could trigger an AI cyber arms race, reshaping a $200B+ market amid collapsing exploit timelines. 𝕏

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Originally reported by The Guardian - AI

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