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Anthropic expands verified cyber access through three security tiers

Anthropic combined Glasswing and its Cyber Verification Program into three access tiers. Verified defenders can request advanced Claude models; offensive testing requires authorization and extra controls. Its controlled Opus 5.5 evaluation blocked 46 of 50 Defense trials, while Red Team access completed 34 without blocks. These are test results, not real-world attacks.

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CURRENT ASSESSMENT · REVISION 1
AWAY FROM DOOM30confidence 60/100

Why it moved the index

Verified access, differentiated permissions and monitoring offer a concrete control on frontier cyber capability. Net defensive benefit is an inference, not measured prevention: wider access and fewer offensive blocks retain misuse risk. Specialized access adds US-government review; the announced future privacy system is not yet deployed.

Assessment history

  1. R1
    Away 30 · confidence 60

    New dated expansion introduces three verified cyber-access tiers, distinct from the May vulnerability report and June Glasswing expansion.

    06 Oct 2026

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  1. DoomBench assesses “Anthropic expands verified cyber access through three security tiers” as evidence moving away from doom, with magnitude 30 and confidence 60 out of 100 in the safety and alignment category.

  2. The DoomBench assessment of “Anthropic expands verified cyber access through three security tiers” is based on reporting from Anthropic and records the editorial rationale, source quality, attribution, and revision history.

  3. DoomBench summarizes “Anthropic expands verified cyber access through three security tiers” as follows: Anthropic combined Glasswing and its Cyber Verification Program into three access tiers. Verified defenders can request advanced...

    https://www.doombench.com/news/anthropic-expands-verified-cyber-access-through-three-security-tiers-2026-10-06