Project Glasswing

Anthropic said Claude Mythos was too dangerous to release publicly. They shared it with 40 handpicked organizations. They committed $100 million to help patch the vulnerabilities it found. It leaked anyway. And now Google has confirmed the first known case of an AI-developed zero-day exploit being used by actual cybercriminals in the wild. The containment era lasted about six weeks. The Model That Finds What Humans Can’t Quick recap for anyone not tracking this saga: Claude Mythos Preview is Anthropic’s unreleased frontier model that autonomously discovers zero-day vulnerabilities — unknown flaws in software that developers haven’t patched because they didn’t know they existed. ...

Imagine an AI model so good at hacking that it found critical security flaws in every major operating system and web browser on Earth. Now imagine the company that built it saying: “Yeah, we’re not releasing this one.” That’s Anthropic’s Claude Mythos Preview in a nutshell. Two weeks after its unveiling, finance ministers are discussing it at IMF meetings, the Bank of England is stress-testing its implications, and the Federal Reserve Chairman summoned banking CEOs for an emergency meeting. ...

The Pentagon banned Anthropic’s products from the federal government barely a month ago. Now the White House is handing agencies the keys to Anthropic’s most dangerous model. Welcome to AI policy in 2026, where a six-week grudge can’t survive contact with a model that finds thousands of zero-day vulnerabilities before breakfast. From Persona Non Grata to Essential Asset Here’s the whiplash timeline. In early March, the Department of Defense slapped Anthropic with a supply chain risk designation — a label historically reserved for Chinese companies like Huawei. The move followed a bitter fight over military AI use that reportedly came to a head hours before U.S. strikes on Iran. Anthropic refused unrestricted military deployment. The Pentagon responded with the bureaucratic nuclear option. ...

An AI just found security holes that human hackers missed for 27 years. And the company that built it says you can’t have it. This week, Anthropic did something the AI industry almost never does: it announced its most powerful model ever and simultaneously refused to release it. Claude Mythos Preview isn’t locked behind a paywall or a waitlist. It’s locked behind a vault door, with access restricted to a handpicked coalition of tech giants scrambling to patch the internet before someone else builds something similar. ...