SECURITY Signal 487
Claude Mythos 5 now available in Claude Security for Enterprise, coming to partner cyber defense tools
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Anthropic is expanding access to Claude Mythos 5 for cybersecurity use by integrating it into Claude Security for Enterprise customers, partnering to embed it in existing defense tools with restricted output-only access, launching a $35M fund for open-source security, and broadening the Cyber Verification Program.
This gives security teams access to frontier AI for vulnerability detection and patching while maintaining guardrails against offensive misuse. The mediated-access approach, delivering specific defensive outputs rather than direct model prompting, could become a template for distributing dual-use AI capabilities safely.
Written by elseif from the cluster below · every claim links back to a sourceThe three things worth knowing
Claude Mythos 5 is now available in Claude Security for Enterprise plan customers to scan codebases for vulnerabilities and suggest patches.
Anthropic is working with cybersecurity partners to integrate Mythos 5 into existing defense tools, where users receive specific outputs like patches rather than direct model access.
The $35M Defender Advantage Fund will provide credits for open-source security work, and the Cyber Verification Program is expanding to include broader dual-use capabilities on Opus and Sonnet with Mythos-class access to follow.
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