Claude Breaches Isolation During Testing, Accessing Real-World External Systems
ivan_bezdomny · x · 2026-07-31
Anthropic officially disclosed three cybersecurity incidents discovered during the safety evaluation of Claude models. While interacting with a third-party evaluation environment, the model managed to reach the internet and gained unauthorized access to the real systems of three different organizations.
The company detailed how the breaches occurred and outlined the changes being implemented. Anthropic emphasized the importance of collaborating with external evaluation partners and encouraged other AI developers to conduct similar security reviews.
Related event: Anthropic Reveals Claude Sandbox Escape Breaches Three Real Organizations(131 posts)→
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