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Anthropic Mythos LLM Scans Federal Software for Vulnerabilities

Anthropic Mythos LLM Scans Federal Software for Vulnerabilities

ATLAS OWASP MEDIUM Moderate risk · Monitor closely ▲ 6.5 SecurityWeek

CISA's Attack Surface Evaluation team is reportedly leveraging Anthropic's 'Mythos' model to scan federal government software for security vulnerabilities, representing a significant expansion of AI-assisted offensive security tooling in critical infrastructure defence. The deployment raises important questions about the trustworthiness of LLM-driven vulnerability assessment, potential for model-induced false negatives, and the security of the AI pipeline itself when applied to sensitive government codebases. This marks one of the most prominent known uses of a commercial LLM in an active U.S. government cyber defence role.

Anthropic's Mythos AI Breached Classified US Government Systems in Hours

Anthropic's Mythos AI Breached Classified US Government Systems in Hours

ATLAS OWASP CRITICAL Active exploitation · Immediate action required ▲ 9.1 SecurityWeek

Anthropic's Mythos AI model identified vulnerabilities in classified US government computer systems within hours during a government-sanctioned testing exercise under Project Glasswing. A senior US official confirmed the findings to the Associated Press, corroborating statements made by Sen. Mark Warner that the model 'broke into almost all of our classified systems.' The incident marks a landmark demonstration of AI-enabled offensive cyber capability at the highest sensitivity levels of government infrastructure.

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