Five Reasons Anthropic Kept Its Cybersecurity Breakthrough Invite-Only

Anthropic launched Project Glasswing, a cybersecurity initiative built around the unreleased Claude Mythos Preview.

Claude Mythos Preview identified thousands of significant vulnerabilities across major operating systems and web browsers.

Mythos Preview chains together vulnerabilities in ways that can yield complete system compromise.

A technical evaluation coauthored by Nicholas Carlini found over 99% of the discovered vulnerabilities remain unpatched; the model also found a 27‑year‑old OpenBSD bug.

Anthropic’s restricted rollout aligns with major industry involvement and resources: $100 million in model usage credits, a coalition including Amazon, Apple, Google, Microsoft, Nvidia, CrowdStrike, Palo Alto Networks and the Linux Foundation, a multi‑gigawatt compute deal with Google and Broadcom, a disclosed $30 billion annualized revenue run rate, and a Pentagon dispute over military uses.