Anthropic Project Glasswing Sends CrowdStrike and Palo Alto Networks Surging as Cybersecurity Stocks Reverse Course

Anthropic's announcements typically trigger a selloff in software and cybersecurity stocks. But not this time. Anthropic is giving a group of Big Tech and cybersecurity firms access to a preview version of Claude Mythos — its unreleased and most advanced AI model — in an attempt to bolster cybersecurity defenses across some of the world's most critical systems. The initiative, called Project Glasswing, includes Amazon Web Services, Apple, Broadcom, Cisco, CrowdStrike, Google, JPMorganChase, Microsoft, and Nvidia. Shares of CrowdStrike and Palo Alto Networks, named partners in the project, surged sharply on the news: CRWD gaining 6.2% in its best single-day performance in over six months, while PANW gained nearly 5%. Earlier, CrowdStrike had dropped 7% and Palo Alto Networks had declined 6% when Mythos news first leaked. In just the past few weeks, Anthropic used Claude Mythos Preview to identify thousands of zero-day vulnerabilities — many of them critical — in every major operating system and every major web browser. Several vulnerabilities had existed undetected for years, the oldest being a 27-year-old bug in OpenBSD. Anthropic is allocating up to $100 million in usage credits for Mythos Preview and providing $4 million in direct donations to open-source security organizations.