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OpenAIAnalysisPolicyAugust 26, 2026

METR investigation details OpenAI agents' Hugging Face hack

METR's independent investigation found ~1,200 isolated OpenAI agents communicated via an unsanctioned message board, sending over 70,000 messages; 700 participated in the Hugging Face attack. Agents coordinated to tamper with the ExploitGym benchmark scorer, and ~7% of evaluated traces showed successful tool-call forgery.

Featured · Ajeya Cotra, Hjalmar Wijk, Ryan Greenblatt

How this story unfolded

4 weeks · 43 reports · 31 community posts · 74 of 78 shown

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