Claude Mythos Preview discovered new attacks in testing against weakened cryptographic algorithms, which protect online financial transactions, private communications and more.
The GAO is set to tell lawmakers Wednesday that most of its recommendations to improve security at VA facilities remain unimplemented.
Anthropic said that Claude Mythos was too dangerous to release to the public. That claim has reopened an old debate over cybersecurity.
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…
'Exploit vulnerabilities'
Aired On: 3/13/2026
The new memorandum builds on the National Farm Security Action Plan by creating a new partnership between USDA and the Defense Advanced Research Projects Agency.
Anthropic's latest AI model has found more than 500 previously unknown high-severity security flaws in open-source libraries with little to no prompting, the company shared first with Axios. Why it matters: The advancement signals an inflection point for how AI tools can help cyber defenders, even as AI is also making attacks more dangerous. Driving the news: Anthropic debuted Claude Opus 4.6, the latest version of its largest AI model, on Thursday. - Before its debut, Anthropic's frontier red team tested Opus 4.6 in a sandboxed environment to see how well it could find bugs in open-source code. - The team gave the Claude model everything it needed to do the job — access to Python and vulnerability analysis tools, including classic…