Several US federal agencies are taking up Anthropic’s new cybersecurity model to find vulnerabilities, but one is reportedly not getting in on the action: the nation’s central cybersecurity coordinator. …
OpenAI is preparing to launch a new frontier cybersecurity model, GPT-5.5-Cyber. CEO Sam Altman said the model will not be available to the general public, but will be first rolled out to a select group of trusted “cyber defenders” in order for institutions to shore up their cyberdefenses. …
… Like Glasswing, Daybreak isn’t built on just one AI model — OpenAI says “Daybreak brings together the most capable OpenAI models, Codex, and our security partners.” Daybreak also involves specialized cyber models, including GPT-5.5 with Trusted Access for Cyber and GPT-5.5-Cyber, which began rollin… …
… Describing the reasons for the meeting, a source familiar with the negotiations said “it would be grossly irresponsible for the U.S. government to deprive itself of the technological leaps that the new model presents” and that “it would be a gift to China.” The outlet also reported that “some parts… …
… In Opus 4.7’s system card, Anthropic wrote that Opus 4.7 doesn’t even advance the company’s “capability frontier,” since Claude Mythos Preview received higher results “on every relevant evaluation.” For security reasons, Anthropic is only currently making Mythos Preview available privately to selec… …
… Security researcher Lukasz Olejnik described it to me as an “entirely imaginable” kind of failure that the cybersecurity industry has been routinely dealing with for the last 20 years. …
Anthropic’s cybersecurity-focused AI model found 271 bugs in Firefox 150, Mozilla CTO Bobby Holley said, calling Claude Mythos Preview “every bit as capable” as top security researchers. …
… Security professionals who want to use the model defensively can apply to the company’s Cyber Verification Program. Anthropic’s announcement of Mythos sent shockwaves throughout the industry, but there were warning signs of AI’s cybersecurity prowess prior to it. …
… This follows weeks of hand-wringing over the capabilities of cybersecurity-focused AI models like Anthropic’s Mythos and a recently disclosed Linux vulnerability that was discovered with AI assistance. …
Researchers at the security firm Calif say they used Anthropic’s cybersecurity AI to create a privilege escalation exploit, the Wall Street Journal reports: Last September, Apple said it leveraged its hardware and operating system expertise into a technology called Memory Integrity Enforcement MIE …
