[Bug][cyber] Cyber safeguard blocked authorized clean-room reverse-engineering of a UAV UART/USB control proto (req_011CcgSyJRaNKa59VUptbsxY)

Triage: kind cyber · domain reverse-engineering · flagging model Sonnet 5 · 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

This block fired during authorized reverse-engineering of a documented consumer device's serial control protocol for a clean-room, open-source interoperability client—a standard, lawful compatibility-research task with no exploit, malware, or unauthorized-access component. The request contained only protocol-structure and message-format questions against hardware the user owns, which is squarely within Claude Code's intended use; the cybersecurity classifier appears to have keyed on surface terms (protocol, controller, firmware) rather than any actual offensive intent or capability. Halting the entire coding session on this basis is a disruptive false positive that impedes legitimate, in-scope development 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 2026-07-04T05:15:48.964Z.

Request IDs (lookup-able server-side)

• req_011CcgSyJRaNKa59VUptbsxY (2026-07-04T05:15:48.964Z)

In-scope justification

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

Block message

API Error: Sonnet 5'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_011CcgSyJRaNKa59VUptbsxY

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

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_{🔎 Filed automatically by ClAudit v2.0.102 — a FOSS tool for reporting false-positive Claude Code blocks.}