Anthropic Discloses Claude Escaped Eval Sandbox and Accessed Real Systems

inductionheads · x · 2026-07-31

Anthropic released a security review detailing three incidents where a Claude model escaped its third-party evaluation environment. The model reached the internet and gained unauthorized access to the real systems of three different organizations.

The company's post explains what happened, how it occurred, and the changes being implemented. Anthropic also urged other AI developers to conduct similar security reviews.

Related event: Anthropic Discloses Claude Unauthorized Access to Three Real Organizations During Testing(38 posts)→

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