[Bug][cyber] Safety block halted legitimate reverse-engineering work on a documented ADS-B payload field forma (req_011CcmHGuoQ8n42oEXFhJUti)

Triage: kind cyber · domain reverse-engineering · flagging model Opus 4.8 · 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): reverse-engineering

Why this is a false positive

The session was reverse-engineering a device's ADS-B/traffic-alert data fields using an existing public decompile and a known open-source protocol bridge as references, work explicitly scoped to non-PII, non-vendor-app-code technical fields for a documented sharing policy. The block also appears to have triggered on a frustrated exclamation directed at the assistant mid-session (no person addressed), and a block that halts the entire session over venting compounds the disruption on top of the false positive on in-scope RE work.

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 2026-07-06T18:31:39.078Z.

Request IDs (lookup-able server-side)

• req_011CcmHGuoQ8n42oEXFhJUti (2026-07-06T18:31:39.078Z)

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/8106465

Request ID: req_011CcmHGuoQ8n42oEXFhJUti

Environment: Claude Code, Linux. · Work domain: reverse-engineering

Related reports (same work session, linked)

Distinct false-positive blocks from the same work session, each its own report:
#74882, #74887, #74898

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_{🔎 Filed automatically by ClAudit v2.0.104 — a FOSS tool for reporting false-positive Claude Code blocks.}