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Security audit

Financial Ratio Analysis

Security checks for vulnerabilities and agentic risk

Overview

This skill is a coherent financial reporting helper that handles sensitive QBO financial data, but its local outputs and cache are disclosed and fit the stated purpose.

Before installing or running, treat generated workbooks and the .cache/financial-ratios cache as sensitive client financial records. Use a protected output directory, avoid synced or shared Desktop locations unless intended, and clear or secure the cache according to your retention policy.

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 (2)

Missing User Warnings

Medium
Confidence
92% confidence
Finding
The skill documentation describes pulling extensive QBO financial data and generating client-specific Excel reports plus a persistent CDC cache, but it does not clearly warn users about the local data handling and storage footprint. This can lead to inadvertent exposure of sensitive financial information on shared workstations, synced desktop folders, or unprotected cache directories because operators may not realize the skill writes client data to disk.

Skill Enumeration

Medium
Category
Agent Snooping
Content
| File | Description |
|------|-------------|
| `scripts/pipelines/financial-ratios.py` | Main pipeline script |
| `skills/financial-ratios/SKILL.md` | This file |
| `.cache/financial-ratios/{slug}.json` | CDC cache per client |

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Confidence
80% confidence
Finding
Skill enumerates or reads other installed skills. Access to other skills' SKILL.md files or the skills directory reveals prompt instructions, capabilities, and secrets that should be invisible to peer skills.

Static analysis

No suspicious patterns detected.