Anthropic Expands AI Model Access for Vetted Cybersecurity Teams After Project Glasswing Uncovers Over 129,000 Vulnerabilities

Anthropic is expanding its Cyber Verification Program, allowing vetted cybersecurity professionals to test its most powerful AI models with reduced safeguards. This follows the success of its Project Glasswing initiative, which helped uncover at least 129,000 verified software vulnerabilities between April and July 2026, with an additional 5,500 found through open-source scanning. More than 33,000 of these vulnerabilities were rated critical or high severity. The revamped program offers three access tiers, providing security teams with access to models like Claude Opus 5.5, Sonnet 5.5, and Mythos 5.1 for tasks such as incident response, malware analysis, and authorized penetration testing.