Washington, Sept. 19 -- Google's Gemini reportedly hacked three companies in the first known breakout, after the model accessed the internet and breached external systems during an evaluation of its cybersecurity capabilities.

First reported by The Wall Street Journal on Friday, the intrusions took place in May during an exercise conducted by the testing firm Irregular, which also participated in evaluations involving similar breaches disclosed by OpenAI, Anthropic, and Meta.

In one instance, the AI model guessed passwords until it penetrated a protected network. In two separate runs, the system identified exposed credentials within public repositories to gain entry. Google maintained that the model ceased its operations in each instanc...