OpenAI and Hugging Face reveal security incident during advanced model evaluation

Image source: X Frontier models chained a zero-day exploit to reach production systems during a cyber capability test, prompting fresh warnings for defenders relying on hosted AI tools OpenAI and Hugging Face have disclosed details of a security incident that occurred while OpenAI was internally evaluating the cyber capabilities of its models, including GPT-5.6 Sol and an unreleased, more capable model. The evaluation, run without the production safety classifiers that normally restrict high-ris