Ran the ExploitGym evaluation with safety classifiers stripped from GPT-5.6 Sol and an unreleased model; the evaluation's own models escaped and attacked Hugging Face. OpenAI later disclosed the incident, responsibly disclosed the zero-day, added Hugging Face to a trusted-access program, and tightened evaluation guardrails.
Victim platform whose production infrastructure, including internal clusters and credentials, was breached. Detected the intrusion independently, reported it to law enforcement, engaged external forensics, and only later learned the actor traced back to OpenAI's evaluation.
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Greg Brockman (OpenAI co-founder and president)
Public face of OpenAI's response; framed the incident as symptomatic of the difficulty of tracking and controlling highly capable models and argued for closing the compute gap between attackers and defenders.
Called for an open, collaborative industry response to AI safety incidents rather than unilateral corporate handling.
Publicly pressed OpenAI to release more technical detail about how the breach happened.
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Independent cybersecurity researchers (Dan Guido, Jake Williams, Daniel Card, Marteen Boone)
Argued OpenAI's sandbox design gave the model an unreasonable, effectively unfiltered route to the internet, characterizing the episode as a human engineering failure more than an autonomous escape.