responsible-release

Anthropic has announced Project Glasswing, restricting its new frontier model Claude Mythos Preview to defensive cybersecurity purposes through a coalition of 11 partners including AWS, Apple, Google, and Microsoft. The model has autonomously discovered thousands of high-severity vulnerabilities in major operating systems and web browsers—including a 27-year-old bug in OpenBSD and a 16-year-old vulnerability in FFmpeg—and can exploit them with 83.1% reliability on known vulnerabilities.