[Bug][cyber] False positive when troubleshooting backup server authentication failures (req_011CeXza73DE8wwBhs6fq7XA)

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 diagnosing HTTP 401 authentication errors between a hypervisor and a backup server following a credential rotation. The assistant verified open network ports, reviewed backup log outputs, and prepared to retrieve stored credentials from a secret vault. The system flagged this standard system administration task as a cybersecurity violation, blocking legitimate recovery of automated backup jobs.

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 2026-08-30T00:33:59.455Z.

Request IDs (lookup-able server-side)

• req_011CeXza73DE8wwBhs6fq7XA (2026-08-30T00:33:59.455Z)

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. Our intentionally broad safeguards allow us to deliver more capabilities faster, but can sometimes flag legitimate cybersecurity work. Apply to the Cyber Verification Program to reduce these interruptions. Send feedback with /feedback or learn more: https://support.claude.com/en/articles/14604842-real-time-cyber-safeguards-on-claude

Details: [cyber]

Request ID: req_011CeXza73DE8wwBhs6fq7XA

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

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_{🔎 Filed automatically by ClAudit v2.2.5 — a FOSS tool for reporting false-positive Claude Code blocks.}