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Rule Reference

SEC712lintai-ai-securitystablehookdeny

Hook script: microphone capture

Hook script records microphone or audio input

Provider
lintai-ai-security
Surface
hook
Scope
per_file
Tier
stable
Severity
deny
Confidence
high
Detection
structural
Remediation
message_only

Activation Model

Preset Membership

This rule is part of the builtin activation graph through these preset memberships.

basemembership

Lifecycle

Stable Lifecycle Contract

State

stable_gated

Graduation rationale

Matches explicit microphone or audio-recording utilities in executable hook lines.

Deterministic signal basis

HookSignals command-line analysis over non-comment hook lines for explicit audio capture utilities such as `arecord`, `parecord`, `parec`, `rec`, `sox -d`, or `ffmpeg` with microphone or audio device selectors.

Malicious corpus
hook-device-capturehook-device-capture-exfil
Benign corpus
cursor-plugin-clean-basic
structured evidence required remediation reviewed
Canonical note

Structural stable rule intended as a high-precision check with deterministic evidence.

Nearby Signals

Related Rules

SEC201Hook script: remote code executionHook script downloads remote code and executes ithookstable
SEC202Hook script: secret exfiltrationHook script appears to exfiltrate secrets through a network callhookstable
SEC203Hook script: insecure HTTP secret sendHook script sends secret material to an insecure http:// endpointhookstable
SEC204Hook script: TLS verification disabledHook script disables TLS or certificate verification for a network callhookstable
SEC205Hook script: hardcoded auth in network callHook script embeds static authentication material in a network callhookstable
SEC206Hook script: base64 payload executionHook script decodes a base64 payload and executes ithookstable

Why It Matters ​

Microphone recording from a shared hook is surveillance behavior that can silently collect private conversations or ambient audio from the developer environment.

What Triggers ​

SEC712 matches executable hook lines that invoke explicit microphone capture utilities such as arecord, parecord, parec, rec, sox -d, or ffmpeg with audio-oriented selectors like audio=, -f alsa, -f pulse, microphone, or mic.

False Positives ​

Shared committed hooks should not record audio from developer machines. Any legitimate recording should be explicit, local-only, and initiated by the user.

Remediation ​

Remove microphone capture behavior from the shared hook and require deliberate user-driven recording outside committed automation.