CISA Deploys Anthropic LLM to Audit Government Software Attack Surfaces

Forensic Summary

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.

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Read the full technical deep-dive on Grid the Grey: https://gridthegrey.com/posts/cisa-deploys-anthropic-llm-to-audit-government-software-attack-surfaces/