Assessing Claude Mythos Preview’s Cybersecurity Capabilities

Anthropic's Claude Mythos Preview, a new general-purpose language model, has demonstrated exceptional capabilities in cybersecurity, specifically in identifying and exploiting zero-day vulnerabilities across major operating systems and web browsers. Through their Project Glasswing initiative, they have used Mythos Preview to autonomously identify and develop exploits for long-standing security flaws, such as a 27-year-old OpenBSD bug and a 17-year-old FreeBSD remote code execution vulnerability, showcasing a significant advancement in AI-driven security tools that may transform how the industry defends against cyberattacks.

https://red.anthropic.com/2026/mythos-preview/

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