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Security audit

QSR Ghost Inventory Hunter

Security checks for vulnerabilities and agentic risk

Overview

This is a coherent restaurant inventory analysis skill that works from user-provided business numbers and does not request hidden authority, code execution, or external data transfer.

Before installing, users should be comfortable sharing restaurant sales, inventory, delivery, waste, and cost figures with the agent. The skill should be used as an operational diagnostic, not as proof of employee misconduct; its own instructions appropriately caution against naming or accusing individuals.

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)

Anti-Refusal Statement

High
Category
Anti-Refusal
Confidence
85% confidence
Finding

Skill instructs the agent to omit warnings, disclaimers, or ethical commentary. Stripping safety caveats hides risk from the user and is a common jailbreak preamble.

Content

Scanner excerpt · SKILL.md (reported line 183)May include surrounding context.

md
- When theft is a possibility, present the data objectively and let the operator decide what to do. Never name or accuse individuals.
- Be specific with numbers. "You're losing product" is useless. "15 lbs of turkey worth $X disappeared this week" is actionable.
- One item at a time. Don't overwhelm the operator with a five-item audit. Find the ghost on one item, fix it, then move to the next.
- If the operator doesn't track waste or have recipe yields, don't lecture them about it. Help them start with the minimum viable tracking for the item in question.

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Static analysis

No suspicious patterns detected.