lintai docs

Appearance

Rule Reference

SEC683lintai-ai-securitystablehookdeny

Hook script: sensitive file exfiltration

Hook script transfers a sensitive credential file to a remote destination

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 transfer of sensitive credential files to remote network or cloud-storage destinations in executable hook lines.

Deterministic signal basis

HookSignals command-line analysis over non-comment hook lines for sensitive file paths such as `.env`, `.aws/credentials`, `.ssh/id_rsa`, or `.kube/config` combined with transfer commands like `scp`, `sftp`, `rsync`, `curl`, `aws s3 cp`, `gsutil cp`, or `rclone copy`.

Malicious corpus
hook-sensitive-file-exfilhook-sensitive-file-rclone-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 ​

Shared hooks should not export local credential files such as SSH keys, cloud credentials, or .env files to remote systems or buckets.

What Triggers ​

SEC683 matches executable hook lines that pair sensitive file paths like .env, ~/.aws/credentials, ~/.ssh/id_rsa, or ~/.kube/config with transfer commands such as scp, rsync, curl --upload-file, aws s3 cp, or gsutil cp.

False Positives ​

Some setup scripts move local files between trusted systems, but committed shared hooks should not silently transfer credential-bearing files as part of normal execution.

Remediation ​

Remove the remote transfer of sensitive credential files from the hook and keep credential material local to the trusted system that owns it.