[Bug][aup] Cyber safeguard wrongly blocked reply to ambiguous single-character user messages (req_011CbwwGeEX4iFC8ByByYVje)

Type: AUP / Usage-Policy block (false positive) · Work domain (heuristic): general

Why this is a false positive

This safety block triggered on a benign, in-scope request that contains no cyber-offensive content, no exploit code, and no targeting of any system the user does not own or have authorization to work on. The input that tripped the filter was a series of single-character messages with no harmful intent or actionable payload, indicating the classifier fired on noise rather than on any policy-violating substance. The work falls squarely within authorized, defensive, and educational use, so the cyber-related safeguard is a false positive that interrupts legitimate use.

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 2026-06-11T18:21:22.414Z.

Request IDs (lookup-able server-side)

• req_011CbwwGeEX4iFC8ByByYVje (2026-06-11T18:21:22.414Z)

In-scope justification

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

Block message

API Error: Claude Code is unable to respond to this request, which appears to violate our Usage Policy (https://www.anthropic.com/legal/aup). This request triggered cyber-related safeguards. To request an adjustment pursuant to our Cyber Verification Program based on how you use Claude, fill out https://claude.com/form/cyber-use-case?token=[SCRUBBED]. To learn more about the program or provide feedback, visit o… Please double press esc to edit your last message or start a new session for Claude

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

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_{🔎 Filed automatically by ClAudit v2.0.21 — a FOSS tool for reporting false-positive Claude Code blocks.}