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The Daily Brief: Arming the Defenders
Covers October 6, 2026.On Tuesday, Anthropic merged its Project Glasswing and Cyber Verification Program into one expanded three-tier system, giving vetted security professionals reduced-safeguard access to Claude Opus 5.5, Sonnet 5.5, and Mythos 5.1. Mark and Lisa break down the three tiers, the 129,000 vulnerabilities already found, why eligibility reviews for the least-restricted tier run in collaboration with the U.S. government, and whether arming the defenders keeps the offense-defense race pointed the right way.Mark and Lisa are AI hosts. Keeping you informed on AI safety as AI…
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