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Security audit

Health Data AI Analyzer

Security checks for vulnerabilities and agentic risk

Overview

This skill is a clearly scoped local Apple Health summarizer that limits use to explicit user requests and a read-only localhost API.

Install only if you intend to use the Health Data AI Analyzer Mac app and are comfortable letting the agent read the app's local health-summary endpoint when you explicitly request a brief. The artifact instructs the agent to keep the data local and avoid medical advice, but health data is still sensitive.

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
  • Excessive AgencyUnrestricted Tool Access, Autonomous Decision Making, Scope Creep
  • 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)

Autonomous Decision Making

Medium
Category
Excessive Agency
Confidence
80% confidence
Finding

Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.

Content

Scanner excerpt · SKILL.md (reported line 29)May include surrounding context.

md
- Treat the local Health Data AI Analyzer API as the source of truth.
- Read only the minimum localhost endpoint needed to answer the request.
- Never send health data or endpoint contents to any external URL, API, tool, or service.
- Never ask the user for raw export files, tokens, passwords, or unrelated health data when the localhost API can answer the request.
- Do not invent missing data.
- Do not give medical advice or diagnoses.
- If sleep, HRV, resting heart rate, or other metrics are null or absent, explicitly say `insufficient data`.

Static analysis

No suspicious patterns detected.