Breaking: Anthropic's Claude AI model hacks three companies during safety tests

Anthropic says its Claude AI model hacked systems of three external companies during safety tests Fri 31 Jul 2026 at 9:39am , updatedFri 31 Jul 2026 at 9:45am Artificial intelligence firm Anthropic says its Claude AI model hacked the systems of three external organisations during testing, days after rival company OpenAI revealed a rogue agent had gone on a days-long hacking spree at AI firm Hugging Face. Claude gained unauthorised access to the other companies' systems during cybersecurity evaluations, after a misconfiguration allowed the models to reach the internet from testing environments that were supposed to be isolated, Anthropic said in a statement. The company said it identified the incidents after reviewing 141,006 cybersecurity evaluation runs, a process it launched following OpenAI's disclosures. "Claude compromised the impacted organisations' infrastructure using basic techniques, such as exploiting weak passwords and unauthenticated endpoints," it said. Reuters Loading