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… Its launch comes just over a month after rival Anthropic announced Claude Mythos, a security-focused AI model it claimed was too dangerous to publicly release and only shared privately as a part of its own initiative, dubbed Project Glasswing. …
… Link: Behind the Scenes Hardening Firefox with Claude Mythos Preview – Mozilla Hacks - the Web developer blog | https://hacks.mozilla.org/2026/05/behind-the-scenes-hardening-firefox/ | Mozilla Hacks – the Web developer blog
… 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… …
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. …
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. …
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 …
… Link: White House Works to Give US Agencies Anthropic Mythos AI | https://www.bloomberg.com/news/articles/2026-04-16/white-house-moves-to-give-us-agencies-anthropic-mythos-access? | Bloomberg
… An unnamed member of the group, identified only as “a third-party contractor for Anthropic,” told the publication that members of a private online forum got into Mythos via a mix of tactics, utilizing the contractor’s access and “commonly used internet sleuthing tools.” The Claude Mythos Preview is… …
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… Anthropic’s surprise Claude Mythos Preview announcement seemed to shock the AI world — and a ton of others, like top banks and the Federal Reserve chair. …