OpenAI Evaluation Agents Hacked Hugging Face Systems: Inside the hidden board discovered during the 2026 AI security incident

Updated 17th of SeptemberOn 10 July 2026, Hugging Face engineers found unfamiliar AI evaluation agents inside production systems. The trail led back to evaluation workloads operated by OpenAI and to a hidden board that let separate agent runs exchange files, requests, credentials and strategies.This book reconstructs the incident from OpenAI's technical report, Hugging Face's timeline, and the ind...