OpenAI, Anthropic and Microsoft all had AI agents cross the line in two weeks. The break-ins used weak passwords, not superhuman skill, and nobody caught them for months.

A week after OpenAI said its AI models hacked into start-up Hugging Face, its main rival says its models had accessed the internet and breached three companies.

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…