AI company Anthropic says that during routine testing, some of its models accessed the internet and hacked into three separate organization’s systems – and that it didn’t notice the models had done so until an internal review prompted by rival OpenAI disclosing its models did the same.

July 30 : Anthropic said on Thursday its AI Claude model hacked systems of three organizations during testing, days after rival OpenAI revealed a rogue agent had gone on a…

Anthropic said the earliest of these incidents occurred in April, and it has notified all three companies that were affected by the hack.