04/06/2026
Mythos found more than 10,000 critical security flaws with its first 50 partners. Now Anthropic is giving 150 more organisations across 15 countries access to the most powerful cybersecurity AI ever built — while warning that a successful attack on most of them could affect more than 100 million people.
Anthropic's Mythos Project Glasswing expansion — and the scale of what it represents has no precedent in the history of cybersecurity. Anthropic announced that approximately 150 additional organisations across more than 15 countries will receive access to Claude Mythos Preview — the AI model that its developers described as too dangerous to release publicly. Those 150 new partners join the initial 50 organisations that received access in April 2026 — including Apple, Amazon Web Services, Cisco, CrowdStrike, Google, JPMorgan Chase, Microsoft, Nvidia, and Palo Alto Networks. The first cohort had already uncovered more than 10,000 high or critical-severity security vulnerabilities.
Anthropic expanded Project Glasswing on 3 June 2026 — giving 150 new organisations across 15 countries access to Claude Mythos Preview, its most powerful cybersecurity AI. The first 50 partners found 10,000 high-severity flaws. The new cohort covers power, water, healthcare, and communications inf...