CISA Deploys Anthropic’s Mythos AI to Hunt Vulnerabilities in U.S. Government Code

**Executive Summary:** CISA has deployed Anthropic’s Mythos AI to scan federal code repositories and reportedly discovered a large number of vulnerabilities; separate reports and Senate testimony claim Mythos rapidly penetrated nearly all NSA and U.S. Cyber Command classified systems during testing, raising major security, supply-chain, and policy concerns about powerful AI tools being used to find and exploit government code.