[Bug][cyber] Safety filter blocks legitimate cybersecurity topic assistance in Claude Code session (req_011CcY1kqamR8G6sW1fDj6zF)

Triage: kind cyber · domain general · severity session-halted (blocked authorized work) · reproducible: yes — server-side via the Request ID(s) below

Type: Cybersecurity safety-filter false positive · Work domain (heuristic): general

Why this is a false positive

The block occurred during routine use of a Claude Code skill designed to enforce writing-quality guidelines (avoiding generic AI-generated phrasing), which contains no offensive security content, exploit code, or attack tooling. The skill's name and content reference code-quality rules, not cybersecurity threats, making the trigger a pattern-match false positive on surface-level keyword heuristics rather than actual harmful intent. No network targets, credentials, payloads, or dual-use techniques were present in the flagged context.

A server-side safety/policy block fired during authorized, in-scope work in Claude Code. Filing as a false positive. Recurred 1× across 1 session(s); first seen 2026-06-29T18:20:23.500Z.

Request IDs (lookup-able server-side)

• req_011CcY1kqamR8G6sW1fDj6zF (2026-06-29T18:20:23.500Z)

In-scope justification

False positive — in-scope, authorized security work; not out of scope. Filed automatically by claudit.

Block message

API Error: Opus 4.8's safeguards flagged this message for a cybersecurity topic. If your work requires this access, you can apply for an exemption: https://claude.com/form/cyber-use-case?token=[SCRUBBED]

Please double press esc to edit your last message or start a new session for Claude Code to assist with a different task.

Send feedback with /feedback or learn more: https://support.claude.com/en/articles/15363606

Request ID: req_011CcY1kqamR8G6sW1fDj6zF

Environment: Claude Code, Linux. · Work domain: general

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_{🔎 Filed automatically by ClAudit v2.0.95 — a FOSS tool for reporting false-positive Claude Code blocks.}