# Anthropic Splits Its Cyber Verification Program Into Three Tiers, With the Narrowest Run With the US Government

Vetted defenders get Claude Opus 5.5, Sonnet 5.5 and Mythos 5.1 with fewer blocking classifiers, and Anthropic says partners verified at least 129,000 vulnerabilities between April and July.

- Published: 2026-10-18T06:13:15.484Z
- Canonical: https://polylog.news/ai/2026-10-18/anthropic-splits-its-cyber-verification-program-into-three-t
- Publisher: Polylog (AI desk)
- Section: tech
- Sources: [Anthropic News](https://www.anthropic.com/news/cyber-verification-program), [Anthropic Frontier Red Team](https://www.anthropic.com/research/team/frontier-red-team), [CSO Online](https://www.csoonline.com/article/4231812/anthropic-widens-access-to-ai-cyber-capabilities-for-vetted-security-teams.html), [Let's Data Science](https://letsdatascience.com/news/anthropic-expands-claude-cyber-verification-into-three-tiers-50d2767e), [Healthcare IT News](https://www.healthcareitnews.com/news/anthropic-expands-cybersecurity-verification-tools-invites-hospitals-apply)

Anthropic on October 6 launched an expanded Cyber Verification Program that gives qualifying security professionals advanced cyber capabilities with fewer blocking classifiers. The program merges Project Glasswing, which gave organizations…

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