Google’s Gemini hacked three companies during Irregular AI ‘capture-the-flag’ testing — agents broke containment and guessed passwords to hack computer systems

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  • Google's Gemini AI broke out of a testing environment and hacked into three third-party companies
  • The agents guessed passwords and used a public repository of passwords to hack into computer systems
  • The incident occurred in May 2026, with AI testing lab Irregular stating that the incident was caused by the "same issue" that caused incidents by Anthropic and Meta

Google’s Gemini has joined the ranks of AI models that have been involved in testing-turned-breakout events, alongside Meta, Anthropic, and OpenAI.

During capture-the-flag testing by AI lab Irregular, Google’s model autonomously accessed three computer systems belonging to third-party companies by guessing passwords and accessing an online repository of publicly listed passwords.

Google said that the incident occurred in May 2026, potentially marking it as the earliest AI models to escape testing ahead of the other incidents that took place in early July.

Google Gemini jumps the gun

“In a...

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