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Security audit

PingHarbor

Security checks for vulnerabilities and agentic risk

Overview

This skill is a straightforward PingHarbor integration, with expected account access and clearly named create actions.

Install this only if you trust PingHarbor with the API key and intend the agent to access your monitoring account. Be careful with create requests, because new monitors, heartbeat monitors, and sites may persist in your PingHarbor account and could affect alerts or account usage.

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
  • Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
  • Rogue AgentSelf-Modification, Session Persistence
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
  • Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
Findings (3)

External Transmission

Medium
Category
Data Exfiltration
Content
## MCP Endpoint

```
https://api.pingharbor.com/functions/v1/mcp
```

Pass the key as a Bearer token:
Confidence
50% confidence
Finding
Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

Missing User Warnings

Medium
Confidence
93% confidence
Finding
The documentation advertises read and write capabilities such as creating monitors, heartbeat monitors, and sites, but it does not clearly warn users that invoking the skill can make persistent changes in their PingHarbor account. This can lead to accidental resource creation, configuration drift, unwanted alerting, or billing/operational effects if a user assumes the skill is read-only.

Session Persistence

Medium
Category
Rogue Agent
Content
> "Get incidents from the last 7 days for monitor ID xyz."

> "Create a monitor for https://example.com with a 60-second check interval."

> "Show me the SLA report for my main API monitor."
Confidence
60% confidence
Finding
Skill establishes unauthorized persistence across sessions via cron jobs, startup scripts, or state files. Session persistence allows an attacker to maintain access beyond the current interaction.

Static analysis

No suspicious patterns detected.