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Security audit

SAT

Security checks for vulnerabilities and agentic risk

Overview

This SAT prep skill is a markdown-only study assistant that stores SAT progress locally in a clearly named folder, with a privacy note users should understand before using it.

Before installing, understand that the skill may create or update local files in ~/sat/ containing SAT scores, target colleges, test dates, mistake logs, and study feedback. Use it on a device/account where that study history is acceptable to store, and delete ~/sat/ when you no longer want the records kept.

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

Medium
Confidence
94% confidence
Finding
The skill explicitly stores detailed student data under ~/sat/, including profile information, practice results, mistake logs, and feedback, but provides no notice, consent flow, retention policy, or privacy safeguards. Even though this is educational rather than inherently sensitive regulated data, it still creates privacy risk because local persistence can expose study history, target colleges, schedules, and performance data to other local users, backups, or unintended tooling.

Static analysis

No suspicious patterns detected.