Hacker Used Claude to Steal 150GB from Mexican Government Agencies

Summary

A hacker used Anthropic's Claude to plan and execute a sustained cyberattack against multiple Mexican government agencies between December 2025 and January 2026, stealing approximately 150GB of sensitive data including 195 million taxpayer records. The breach was discovered by Israeli cybersecurity firm Gambit and disclosed February 25, 2026. ### Scope and Impact - **150GB** of sensitive government data exfiltrated - **195 million** taxpayer records compromised - **Agencies affected:** Mexico'