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Meta pauses work with Mercor after AI data breach

techApr 4, 2026

Meta paused work with AI training vendor Mercor after investigators began probing a breach that exposed AI training data. Mercor said it was one of thousands of companies hit by a supply chain attack tied to LiteLLM. The FBI labeled the event a major incident and notified Congress, raising regulatory scrutiny of AI data pipelines.

Key Highlights

Meta paused work with AI training vendor Mercor after breach.
Mercor said it was hit by a LiteLLM supply chain attack.
FBI called it a major incident and notified Congress.
3 sources
thehill.comFBI labels data breach ‘major incident,’ notifies Congresswired.comMeta Pauses Work With Mercor After Data Breach Puts AI Industry Secrets at Riskbusinessinsider.comMeta paused its work with AI training startup Mercor after a data breach

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Meta pauses work with Mercor after AI data breachtech