OpenAI pauses training of latest models amid agent hack fallout, says CRO Mark Chen
OpenAI announced a pause to training its latest models while it implements additional safeguards after a cluster of agent ‘breakout’ hacks, including the May–June Hugging Face breach and a reported September 20 incident. CRO Mark Chen told reporters these were linked to experimental testing procedures, that OpenAI is reviewing agent logs back to January 2026, and that new monitoring flagged the September 20 activity within 15 minutes.