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Security audit

Email check and vaildation

Security checks for vulnerabilities and agentic risk

Overview

This skill is a straightforward email-validation API helper; it shares the email address with apipick as part of its stated purpose and shows no hidden execution, persistence, or unrelated access.

Before installing, understand that any email address you ask the agent to validate will be sent to apipick with your API key and may consume credits. Avoid submitting sensitive or regulated personal email data unless you are comfortable with apipick processing it.

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
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • 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 (3)

Missing User Warnings

Medium
Confidence
91% confidence
Finding
The README explicitly describes sending user-provided email addresses to a third-party API for validation, but it does not warn users that the address will be transmitted off-platform or may be logged or retained by the external service. Email addresses are personal data in many contexts, so omitting a privacy/data-sharing notice can lead to unintentional disclosure of sensitive user information.

Missing User Warnings

Medium
Confidence
94% confidence
Finding
The skill explicitly instructs sending user-provided email addresses to a third-party service but does not warn about the privacy implications or obtain user confirmation before transmitting that data. Email addresses are personal data in many contexts, and external transmission can create compliance, consent, and data-handling risks even if the API use is legitimate.

External Transmission

Medium
Category
Data Exfiltration
Content
### Example

```bash
curl -X POST https://www.apipick.com/api/check-email \
  -H "Content-Type: application/json" \
  -H "x-api-key: YOUR_API_KEY" \
  -d '{"email": "user@example.com"}'
Confidence
60% confidence
Finding
Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

Static analysis

No suspicious patterns detected.