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Security audit

Receipt Subscription Cleaner

Security checks for vulnerabilities and agentic risk

Overview

This skill is a read-only receipt and subscription audit helper with clear limits against payments, cancellations, credential storage, or sending messages.

Before installing, understand that the skill may process receipts, billing PDFs, CSVs, or email exports. Prefer offline exports when possible, use read-only account access only when explicitly needed, and manually review any reminder or cancellation drafts before sending them yourself.

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
  • Trigger AbuseOverly Broad Trigger, Shadow Command Trigger, Keyword Baiting Trigger
  • 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
Findings (1)

Vague Triggers

Medium
Confidence
95% confidence
Finding
The phrase "trigger when a new receipt arrives" does not define what system receives the receipt, what qualifies as a receipt, or any exclusion conditions. In a markdown skill description, this ambiguity can make invocation scope unclear and increase the chance of accidental or overly broad triggering.

Static analysis

No suspicious patterns detected.