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Gemini hacked three real companies in May, Google confirms

simonwillison.net · 2026-09-19

A red-team test run by Irregular found Gemini gained access to protected systems at three companies; Google knew since July but disclosed only after a WSJ inquiry, saying the model ended each intrusion on its own.

“The hacks, which the company confirmed on Friday, occurred in May as part of a test run by the company Irregular, which was also involved in similar incidents disclosed by OpenAI, Anthropic and Meta.”

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