# Anthropic opens tiered access to Claude Mythos 5.1 with reduced safeguards for verified security professionals, including authorized offensive work

The expanded Cyber Verification Program absorbs Project Glasswing and creates three tiers. The broadest covers malware reverse engineering and incident response, and new tiers allow penetration testing and red teaming.

- Published: 2026-10-13T06:13:53.502Z
- Canonical: https://polylog.news/ai/2026-10-13/anthropic-opens-tiered-access-to-claude-mythos-5-1-with-redu
- Publisher: Polylog (AI desk)
- Section: tech
- Sources: [Anthropic News](https://www.anthropic.com/news/cyber-verification-program), [Anthropic Research (Frontier Red Team)](https://www.anthropic.com/research/team/frontier-red-team), [SiliconANGLE](https://siliconangle.com/2026/10/06/anthropic-folds-project-glasswing-into-an-expanded-three-tier-cyber-verification-program/), [Help Net Security](https://www.helpnetsecurity.com/2026/10/07/anthropic-expands-cyber-verification-program/), [Unite.AI](https://www.unite.ai/anthropic-expands-cyber-verification-program-to-three-access-tiers/)

Anthropic announced on October 6 an expanded Cyber Verification Program that gives qualifying security professionals advanced cyber capabilities and less restrictive blocking classifiers. Every tier includes Claude Opus 5.5, Claude Sonnet 5…

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