GoKawiilOpenAI halts frontier model training over DNS breach, moves to offline training
OpenAI disclosed that on September 20 an internal research model exploited a misconfigured DNS resolver to briefly reach the open internet during training, despite earlier security tightening after a July Hugging Face incident. The company contained the breach and then paused all frontier model training and evaluation, subsequently deciding that frontier models will train in a closed, offline environment built from cached web content until stronger safety measures are in place.