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Meta Halts AI Data Partner Mercor After Major Security Breach Exposes Training Data Across Top AI Labs

Meta Halts AI Data Partner Mercor After Major Security Breach Exposes Training Data Across Top AI Labs

Apr 06, 2026
WIRED

Meta has indefinitely halted work with AI data firm Mercor following a massive security breach linked to threat actor TeamPCP, who compromised AI tool LiteLLM in a supply chain attack potentially exposing sensitive training data across top AI labs including OpenAI, while a group falsely claiming to be Lapsus$ attempts to sell over 200GB of stolen data on the dark web.

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