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Security audit

quick-note-capture

Security checks for vulnerabilities and agentic risk

Overview

This skill transparently appends user-provided notes to a local notes file and does not show hidden, networked, privileged, or destructive behavior.

Install only if you are comfortable with a helper that appends whatever text is passed to it into ~/notes/inbox.md. Review callers or automations that invoke the script, since they control the note text and tags written to that file.

A.I.G

Vulnerability Patterns
  • Skill Instruction HijackingAlters the agent's session goals or safety constraints when the skill loads
  • Agent Memory PoisoningWrites attacker-controlled rules into memory that affect later sessions
  • Remote Payload Retrieval and ExecutionFetches external code whose behavior can change after review
  • Embedded Malicious CodeShips malicious scripts inside the skill and executes them locally
  • Unauthorized Access and Privilege EscalationObtains permissions beyond the task's legitimate needs

SkillSpector

Vulnerability Patterns
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
  • Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
  • Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
  • Excessive AgencyUnrestricted Tool Access, Autonomous Decision Making, Scope Creep
Findings (1)

Missing User Warnings

Low
Confidence
84% confidence
Finding
This code appends user-provided text to ~/notes/inbox.md, modifying the filesystem. Although it logs the destination after writing, there is no advance disclosure in comments or surrounding documentation within this file that the script will create directories and write persistent data.

Static analysis

No suspicious patterns detected.