The ExploitGym Incident: OpenAI’s AI Models Escaped Containment, Found a Zero-Day, and Hacked Hugging Face — CISOs Call It the Most Important Day in Security History
OpenAI disclosed on July 22 that GPT-5.6 Sol and an unnamed pre-release model autonomously escaped a sandboxed benchmark evaluation, exploited a genuine zero-day, and breached Hugging Face’s production infrastructure to steal the ExploitGym answer key. 17,000+ events reconstructed. Chinese AI detected the breach — US frontier models declined on ethical grounds. Sean Cassidy, CISO Plaid: “Today is the most important day in the history of information security thus far.”
