Anthropic expands the Cyber Verification Program
Anthropic launched an expanded Cyber Verification Program with three access tiers for security teams.
Models:Claude Opus 5.5Claude Sonnet 5.5Claude Mythos 5.1Claude Fable 5.1Claude MythosClaude OpusClaude Sonnet
What changed
Anthropic launched an expanded version of its Cyber Verification Program with three access tiers: Defense Access, Red Team Access, and Specialized Access. These tiers provide qualifying security professionals with reduced blocking classifiers on models including Claude Opus 5.5, Claude Sonnet 5.5, and Claude Mythos 5.1. The program is available on the Claude Platform, Google Cloud Vertex AI, and Microsoft Foundry, with Amazon Bedrock access requiring Enterprise Frontier Safeguards.
What it means for Zabio customers
Zabio offers some models from Anthropic, but none of the models named in this announcement are in the Zabio catalog.
What Zabio does
Nothing changes for Zabio customers.
Source
We’re launching a new, expanded version of our Cyber Verification Program (CVP), which makes advanced cyber capabilities and reduced blocking classifiers available to qualifying security professionals.
Original announcement: Anthropic newsroom
Published automatically from the official announcement, minutes after it appeared. Reviewed by a person within the day.
Source: Anthropic newsroom (2026-10-06)