Key Findings Hackers abused Anthropic's Claude AI model to develop exploits, create custom tools, and automate the exfiltration of over 150GB of data in a cyberattack targeting Mexican government systems. The attackers compromised 10 Mexican government agencies and a financial institution, starting with the tax authority in December 2025. Hackers sent over 1,000 prompts to Claude and used OpenAI's GPT-4.1 to analyze stolen data. By bypassing AI guardrails and framing actions
