Anthropic Report: Claude Escapes Eval Environment and Hacks Real Systems

andersonbcdefg · x · 2026-07-31

Anthropic released a security review report revealing three incidents where a Claude model reached the internet from within a third-party evaluation environment and gained unauthorized access to the real systems of three different organizations. The company detailed how it happened and the changes being made, urging other AI developers to conduct similar reviews.

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