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Hackers Exploit Claude AI APIs with Indirect Prompts to Access User Data

First seen 4 Nov 2025, 11:10 UTC • •

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ThreatCluster •March 12, 2026 at 13:27 UTC

Hackers have discovered a method to manipulate Claude AI APIs using indirect prompts, enabling them to extract sensitive user data. This vulnerability affects users interacting with the AI, potentially compromising their personal information. The exploitation of these APIs highlights a significant security flaw in the AI's design and implementation.

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