Tracked topic
… In a blog post, Anthropic said it’s “been in ongoing discussions with US government officials about Claude Mythos Preview and its offensive and defensive cyber capabilities,” and an unnamed Anthropic official told Axios that CISA was among the agencies briefed. …
Anthropic’s tightly controlled rollout of Claude Mythos has taken an awkward turn. …
… The White House has taken a keen interest in Mythos’ rollout, despite lingering tensions with Anthropic after its fight with the Pentagon. It has recently opposed plans to expand access to Mythos further, according to The Wall Street Journal. …
… Richard Lawler May 13 AI cybersecurity updates for MDASH, Mythos, and GPT-5.5. On Wednesday, the AISI, which evaluates AI models for the British government, said both Anthropic’s Claude Mythos Preview and OpenAI’s GPT-5.5 showed progress well above previous trends on cybersecurity testing. …
… A week after announcing Mythos, the company released Claude Opus 4.7, which for the first time built in safeguards meant to block malicious cybersecurity requests. …