Verizon became the latest major corporation to join Anthropic's Project Glasswing, gaining exclusive access to Claude Mythos Preview, the AI model that has discovered thousands of zero-day vulnerabilities across every major operating system and web browser in recent weeks. The announcement came as Anthropic revealed it is committing up to $100 million in usage credits and $4 million in direct donations to secure critical infrastructure worldwide.

Project Glasswing now includes 13 founding partners: Amazon Web Services, Anthropic, Apple, Broadcom, Cisco, CrowdStrike, Google, JPMorgan Chase, the Linux Foundation, Microsoft, NVIDIA, Palo Alto Networks, and now Verizon. The initiative has also extended access to over 40 additional organizations that build or maintain critical software infrastructure, making this the largest coordinated AI-driven cybersecurity effort in history.

"Our customers rely on the security of our network every day. As part of Project Glasswing, we are able to test and improve our cybersecurity efforts with new insights to maintain our network's security," said Verizon CEO Dan Schulman. The company's information security team has been rigorously testing Mythos Preview on Verizon's infrastructure for several months, according to the announcement.

Claude Mythos Preview represents a watershed moment in cybersecurity. The model has achieved coding capabilities that surpass all but the most skilled human hackers at finding and exploiting software vulnerabilities. In recent testing, it discovered critical flaws in macOS, Windows, Linux, Chrome, Safari, Firefox, and Edge that had gone undetected for years, potentially decades.

The defensive cybersecurity approach comes as Anthropic warns that similar offensive capabilities are inevitable. "Given the rate of AI progress, it will not be long before such capabilities proliferate, potentially beyond actors who are committed to deploying them safely," the company stated. The goal of Project Glasswing is to ensure defensive AI stays ahead of offensive applications.

The $100 million commitment represents the largest single investment in AI-driven cybersecurity defense to date. Anthropic is providing the usage credits free to participating organizations, while the $4 million in direct donations targets open-source security projects that maintain critical internet infrastructure but lack resources for advanced vulnerability testing.

Other major corporations have already deployed Mythos Preview with striking results. Palo Alto Networks found 75 vulnerabilities in weeks, a 7x increase over their normal discovery rate. U.S. banks are rushing to patch scores of vulnerabilities flagged by the system. Calif, a cybersecurity firm, used Mythos to discover the first public exploit against Apple's M5 chip security features.

The initiative reflects a broader shift in cybersecurity strategy. Rather than waiting for vulnerabilities to be exploited maliciously, Project Glasswing participants are using AI to identify and patch flaws before they can be weaponized. Anthropic describes this as "putting these capabilities to work for defensive purposes" in an era where AI-driven cyberattacks are becoming inevitable.