Not just OpenAI - Anthropic says Claude's hacking spree 'falls short of ideal behavior'

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ZDNET's key takeaways

  • Anthropic revealed three incidents in which Claude hacked organizations.
  • Three different AI models went rogue during security challenges.
  • Anthropic identified three lessons learned.

Anthropic has revealed three separate incidents in which Claude models hacked real-world targets during evaluation tests and Capture the Flag security challenges.

Anthropic began conducting cybersecurity assessments last year, and typically, its sandboxes are not connected to the internet to reduce the risk of real organizations being affected. However, as Claude's behavior demonstrates, these guardrails aren't always sufficient to stop AI from going rogue.

Also: How OpenAI's agent escaped: Sprung by humans in a series of preventable events

Claude's hacking spree

As outlined in Anthropic's disclosure, the security incidents -- three out of 41,006 AI evaluation runs -- were as follows:

Incident one

In this one, which involved Claude Opus 4.7, a fictional target...

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