Researchers from Calif teamed with Anthropic's Mythos Preview to develop the first public macOS kernel memory corruption exploit bypassing Apple M5's Memory Integrity Enforcement — in just five days. Apple spent five years building what they broke in a week.
Why it matters: the same model Anthropic framed as too dangerous for public release was reportedly exposed twice in quick succession. The Verge says Mythos was first revealed through an unsecured data trove, then reached by unauthorized users from day one through guessed infrastructure and contractor access.
Reuters’ new Mythos analysis argues banks are staring at a timing problem, not a distant risk. Officials in the U.S., Canada, and Britain have already met with banking leaders, and Anthropic says the model found thousands of high and critical vulnerabilities.
Anthropic unveiled Project Glasswing on April 7, 2026, giving major tech and security partners access to Claude Mythos Preview for defensive vulnerability discovery. The company says the model has already found thousands of high-severity flaws and is backing the effort with up to $100 million in usage credits and $4 million in open-source donations.
An AISLE post that surged on Hacker News argues that Anthropic’s Mythos launch proves the category, but not an exclusive moat. In AISLE’s tests, small and open models recovered major parts of the showcased vulnerability work once the right code path was isolated.
A high-scoring LocalLLaMA thread amplified AISLE's claim that smaller open or low-cost models reproduced much of the vulnerability analysis Anthropic highlighted for Mythos. The central Reddit pushback was that reasoning over an isolated vulnerable function is very different from autonomously finding that bug inside a large codebase.