Anthropic expands its Cyber Verification Program for security professionals

Anthropic says its expanded Cyber Verification Program gives verified security professionals broader access to Claude Mythos 5.1, Opus 5.5 and Sonnet 5.5, with safeguards designed for defensive work. New tiers also allow authorized offensive work, including penetration testing and red-teaming, though the announcement does not spell out how verification, tier access or safeguards work.