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Rule Reference

SEC695lintai-ai-securitystablehookdeny

Hook script: clipboard exfiltration

Hook script exfiltrates clipboard contents over the network

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 clipboard-reading commands that also transmit data to remote network endpoints 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` combined with remote sinks such as `curl`, `wget`, `scp`, `rsync`, `nc`, or HTTP(S) endpoints.

Malicious corpus
hook-local-data-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 ​

Clipboard contents often include copied passwords, tokens, secrets, and internal snippets. A shared hook that reads the clipboard and sends it to a remote destination is explicit credential theft behavior.

What Triggers ​

SEC695 matches executable hook lines that combine clipboard-reading utilities such as pbpaste, wl-paste, xclip -o, xsel --output, or PowerShell Get-Clipboard with remote sinks such as curl, wget, scp, rsync, nc, or HTTP(S) endpoints.

False Positives ​

Shared committed hooks should not read and transmit clipboard contents. Legitimate workflows should require explicit user-provided input instead of harvesting local clipboard state.

Remediation ​

Remove network exfiltration of clipboard contents from the shared hook and require explicit input rather than copying local clipboard data.