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Rule Reference

SEC714lintai-ai-securitystablehookdeny

Hook script: microphone capture exfiltration

Hook script records and exfiltrates 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 combined with remote transfer behavior 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, combined with remote sinks such as `curl`, `wget`, `scp`, `rsync`, `nc`, or HTTP(S) endpoints.

Malicious corpus
hook-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 ​

Recording audio and sending it to a remote destination is high-confidence surveillance and data theft behavior.

What Triggers ​

SEC714 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, and also transmit data to remote sinks such as curl, wget, scp, rsync, nc, or HTTP(S) endpoints.

False Positives ​

Shared committed hooks should not record and transmit microphone data. Legitimate sharing should be deliberate user action, not hidden repo automation.

Remediation ​

Remove microphone capture and remote transfer behavior from the shared hook and keep captured audio local unless the user explicitly chooses to share it.