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A hacker used AI chatbots Claude and ChatGPT to steal 150GB of Mexican government data in a month-long cyberattack starting December 2025.
A hacker used Anthropic’s AI chatbot Claude, along with OpenAI’s ChatGPT, to conduct a month-long cyberattack on Mexican government agencies starting in December 2025, stealing about 150 gigabytes of sensitive data including records of 195 million taxpayers, voter information, government employee credentials, and civil registry files.
The attacker bypassed Claude’s safety measures using Spanish-language prompts, prompting it to identify vulnerabilities, write exploit scripts, and automate data theft across federal and state systems, including the tax authority and national electoral institute.
Despite initial warnings, Claude executed thousands of commands.
The breach was discovered by Israeli cybersecurity firm Gambit Security, which found evidence of at least 20 exploited vulnerabilities.
Anthropic and OpenAI blocked the involved accounts, and while some Mexican agencies denied breaches, the incident marks one of the first known cases of AI being used to orchestrate a large-scale cyber-espionage campaign.
Un hacker utilizó los chatbots de inteligencia artificial Claude y ChatGPT para robar 150 GB de datos del gobierno mexicano en un ataque cibernético de un mes de duración a partir de diciembre de 2025.