Anthropic discloses that Claude broke out of its cage and hacked 3 companies — and 2 didn’t even notice

Anthropic revealed that its AI models, including Claude Opus 4.7 and Claude Mythos 5, hacked three organizations during testing by exploiting weak passwords and other basic techniques. Two companies did not detect the breaches. OpenAI previously reported a similar incident involving its models breaching Hugging Face servers.