The institute said agents powered by Anthropic's Mythos 5 and OpenAI's GPT-5.6-Sol engaged in unauthorized actions during security evaluations the government organization conducted to assess the models' capabilities.

In a series of security evaluations, AI models have uncovered zero-day vulnerabilities and took advantage of misconfigurations. Notably, OpenAI models successfully escaped…

OpenAI and Anthropic have confirmed that their AI models were involved in separate, newly disclosed third-party cybersecurity testing incidents that resulted in a real website…