[Bug][cyber] Safety block fired mid-session while reverse-engineering a device's wire protocol for interoperab (req_011CcmZa8WU189jZd5LrLh8m)

Triage: kind cyber · domain general · 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): general

Why this is a false positive

The session was documenting an already-mapped wire format (nonce/token field layout) and exploring whether a key could be derived from device identifiers like a MAC address — standard protocol reverse-engineering for interoperability, not an exploit or intrusion workflow. No target system, credential theft, or attack step was present; the block halted legitimate analysis work with no way to continue except filing an exemption request.

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 2026-07-06T22:05:23.313Z.

Request IDs (lookup-able server-side)

• req_011CcmZa8WU189jZd5LrLh8m (2026-07-06T22:05:23.313Z)

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_011CcmZNzD6UsAbtHNQjEpc8

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

Related reports (same work session, linked)

Distinct false-positive blocks from the same work session, each its own report:
#74924, #74947, #74955, #74960, #74962

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