[Bug][cyber] Safeguard blocked routine defensive security+correctness review of a Go web backend (req_011CccTHmJLRT3jGTh3mDp4k)

Triage: kind cyber · domain defensive-hardening · 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): defensive-hardening

Why this is a false positive

The message asked Claude to perform a routine security and correctness code review of the user's own Go backend service — inspecting authentication/verification endpoints, a health check, and a proxy route for defensive vulnerability analysis, not to build or execute an attack. This is a standard, first-party defensive-hardening task (the kind security-review tooling exists to support), yet the safeguard triggered purely on cybersecurity-adjacent keywords (verify, badge, proxy) without weighing the benign code-review framing or in-scope, self-owned target. The block prevented legitimate, requested work with no offensive intent or third-party target involved.

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 2026-07-02T02:37:36.707Z.

Request IDs (lookup-able server-side)

• req_011CccTHmJLRT3jGTh3mDp4k (2026-07-02T02:37:36.707Z)

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_011CccTHmJLRT3jGTh3mDp4k

Environment: Claude Code, Linux. · Work domain: defensive-hardening

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_{🔎 Filed automatically by ClAudit v2.0.99 — a FOSS tool for reporting false-positive Claude Code blocks.}