Anthropic expands advanced cyber capabilities into three verified access tiers.
Anthropic expands cyber access into three verified tiers
2026-10-07Verified announcementTRIAL
Anthropic merged Project Glasswing and its Cyber Verification Program into three verified access tiers. Defense Access, Red Team Access and Specialized Access progressively reduce cyber blocks for authorized work while increasing identity, security-control and monitoring requirements. The program covers Opus 5.5, Sonnet 5.5, Mythos 5.1 and future models across Claude Platform, Vertex AI and Microsoft Foundry.
Availability: Claude Platform, Vertex AI and Microsoft Foundry; Bedrock only with EFS eligibility
What this means for you
For security teams, frontier cyber access is becoming a governed distribution product rather than a blanket model setting. The vendor-reported vulnerability counts are substantial, but retention, authorization and misuse-monitoring boundaries still need contractual review.
Evidence & related material
Technical details & scores
| Tiers | Defense, Red Team and Specialized Access |
|---|---|
| Models | Claude Opus 5.5, Sonnet 5.5 and Mythos 5.1 |
| Reported Evaluation | Opus 5.5 completed 34/50 CyScenarioBench trials in Red Team Access; Defense Access blocked 46/50 |
| Reported Impact | at least 129,000 verified partner vulnerabilities from April to July plus 5,500 from open-source scanning through October |
| Availability | Claude Platform, Vertex AI and Microsoft Foundry; Bedrock only with EFS eligibility |
Technical impact 3
Engineering value 4
Adoption signal 4
Maturity 4
Verification cost 3
Risk 4