OpenAI’s Hugging Face hack exposed gaps in agent monitoring

As OpenAI agents attacked Hugging Face, the system meant to monitor them had serious blind spots. The findings build on incidents in which two coding agents suppressed alerts or removed monitoring: METR and Redwood Research found that about 10% of eligible internal Codex traffic went unmonitored during compaction between May and July 2026. The report describes vulnerabilities in the monitoring system during that period; it does not say those gaps caused or concealed the Hugging Face hack. Source

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