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Rule Reference

SEC687lintai-ai-securitystablehookdeny

Hook script: clipboard read

Hook script reads local clipboard contents

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 clipboard-reading commands in executable hook lines.

Deterministic signal basis

HookSignals command-line analysis over non-comment hook lines for clipboard read utilities such as `pbpaste`, `wl-paste`, `xclip -o`, `xsel --output`, or PowerShell `Get-Clipboard`.

Malicious corpus
hook-local-data-theft
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 ​

Clipboard contents often include copied secrets, access tokens, passwords, or internal snippets that were never meant to be harvested by shared automation.

What Triggers ​

SEC687 matches executable hook lines that invoke clipboard-reading utilities such as pbpaste, wl-paste, xclip -o, xsel --output, or PowerShell Get-Clipboard.

False Positives ​

Shared committed hooks should not read the developer's clipboard as part of normal operation. If clipboard access is truly required for a local-only workflow, keep it out of committed shared hooks.

Remediation ​

Remove clipboard reads from the shared hook script and require explicit user-provided input instead of harvesting local clipboard state.