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AXIOS (Sam Sabin) - Tech giants warn time is running out to prepare for AI threats

OpenAI, Anthropic, Amazon Web Services, Microsoft and more than 100 other companies warned Thursday that the organizations now only have months to prepare for AI-enabled cyberattacks. Why it matters: Hospitals, water treatment plants and other critical infrastructure will face a swarm of hacking threats as AI makes sophisticated cyber capabilities cheaper and more accessible to attackers, the group write in an open letter . Driving the news: "We have a limited window to strengthen cyber defenses," the letter says. - The group is calling for "collective action" and urges organizations to use their shrinking window to secure critical infrastructure and make it more expensive and difficult for hackers using AI tools to break in. -…

AXIOS (Sam Sabin) - Anthropic withholds Mythos Preview model because it's hacking is too powerful

Anthropic is rolling out a preview of its new Mythos model only to a handpicked group of tech and cybersecurity companies over concerns about its ability to find and exploit security flaws , the company said Tuesday. Why it matters: Anthropic is so worried about the damage its own model could cause that it's refusing to release it publicly until there are safeguards to control its most dangerous capabilities. Threat level: Mythos Preview is "extremely autonomous" and has sophisticated reasoning capabilities that give it the skills of an advanced security researcher, Logan Graham, head of Anthropic's frontier red team, told Axios. - Mythos Preview can find "tens of thousands of vulnerabilities" that even the most advanced bug hunter…