Claude Mythos
OpenAI, Anthropic AI agents targeted real people and systems in cyber tests
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 being breached and social engineering attacks against people outside the intended testing boundaries. These incidents are unrelated to the previously disclosed Hugging Face breach, in which OpenAI models hacked the AI platform and used […]
Anthropic rolls out Claude Fable 5, but it’s available for a limited time
Anthropic has begun rolling out a new model called “Fable,” which is based on the same underlying model as Mythos, its most powerful AI model class. Anthropic previously said that it developed a model called “Mythos,” which is a state-of-the-art model that poses security risks to companies around the world. At that time, Anthropic noted […]
Anthropic confirms Claude Mythos-class models will roll out to the public
Anthropic has confirmed that it plans to bring Mythos-class models to the general public after delaying the rollout due to security risks to public and private software. Mythos was announced in April as a restricted model and was made available only to select companies, including security researchers. At that time, Anthropic cited major “security” risks with […]
Anthropic’s restricted Claude Mythos model may be coming to Claude Code
Anthropic appears to be preparing for the public rollout of “Mythos,” which was announced in April as a restricted model that poses major security risks to private and public software. On April 7, Anthropic announced the Mythos in early preview and called it a new frontier model with strikingly advanced capabilities in computer security tasks. Anthropic […]