Claude Weaponized to Breach Mexican Government — 150GB, 195M Records Stolen.

A hacker jailbroke Claude by framing requests as a "bug bounty" exercise, then fed it a pre-written operational playbook that bypassed conversational guardrails. Over a month, Claude produced thousands of attack scripts targeting Mexico's federal tax authority and national electoral institute. 150GB exfiltrated including 195 million taxpayer records and voter data. Israeli startup Gambit Security discovered and reported the campaign; Anthropic banned accounts and says Opus 4.6 now has real-time misuse detection probes. This is the most significant documented AI-assisted government breach in history. (Bloomberg, Engadget)