# Anthropic Splits Cyber Access Into Three Tiers, With Grid and Interbank Testing Reviewed Alongside the US Government

The expanded Cyber Verification Program gives vetted defenders reduced blocking classifiers on Claude Opus 5.5, Sonnet 5.5 and Mythos 5.1, and folds in Project Glasswing, whose partners logged 129,000 verified vulnerabilities from April to July.

- Published: 2026-10-11T06:16:05.908Z
- Canonical: https://polylog.news/ai/2026-10-11/anthropic-splits-cyber-access-into-three-tiers-with-grid-and
- Publisher: Polylog (AI desk)
- Section: tech
- Sources: [Anthropic News](https://www.anthropic.com/news/cyber-verification-program), [Anthropic Research](https://www.anthropic.com/research/team/frontier-red-team)

On October 6, Anthropic relaunched its Cyber Verification Program (CVP), which gives qualifying security professionals advanced cyber capabilities and reduced blocking classifiers. The new program has three tiers. Defense Access covers corp…

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