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Security audit

LeetCode Mock Interviewer

Security checks for vulnerabilities and agentic risk

Overview

This is a text-only mock coding interview skill with no evidence of hidden execution, persistence, credential use, or unrelated authority.

Installers should expect this skill to steer conversations into a structured coding-interview mode when interview-practice language is used. Review the activation phrases if accidental triggering in general career conversations would be annoying, but no sensitive access or execution behavior was found.

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
  • Trigger AbuseOverly Broad Trigger, Shadow Command Trigger, Keyword Baiting Trigger
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
  • Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
Findings (3)

Vague Triggers

Medium
Category
Not specified by scanner
Confidence
95% confidence
Finding

The skill metadata includes several broad activation phrases such as "interview me" and "technical interview practice," which could cause the skill to trigger in ordinary conversation beyond the user's precise intent. This is not directly a code-execution issue, but it can lead to unintended activation and inappropriate mode-switching, especially in general career or learning discussions.

Content

No source excerpt is available for this finding.

Scope Creep

Low
Category
Excessive Agency
Confidence
70% confidence
Finding

Skill's behavior or capabilities extend beyond its stated purpose. Scope creep allows an agent to perform actions unrelated to its documented functionality, increasing the attack surface.

Content

Scanner excerpt · README.md (reported line 7)May include surrounding context.

md
## What It Does

- Picks any LeetCode problem matching the candidate's topic and difficulty — not limited to a fixed list
- Enforces a structured flow: clarify → brute force → complexity → optimize → code → follow-ups
- Asks interviewer-style follow-up questions about edge cases, tradeoffs, and constraint changes
- Delivers scored feedback (Communication, Problem-solving, Code quality) on a 1-5 scale with specific observations

Scope Creep

Low
Category
Excessive Agency
Confidence
70% confidence
Finding

Skill's behavior or capabilities extend beyond its stated purpose. Scope creep allows an agent to perform actions unrelated to its documented functionality, increasing the attack surface.

Content

Scanner excerpt · SKILL.md (reported line 44)May include surrounding context.

md
## What It Does

- Picks any LeetCode problem matching the candidate's topic and difficulty — not limited to a fixed list
- Enforces a structured flow: clarify → brute force → complexity → optimize → code → follow-ups
- Asks interviewer-style follow-up questions about edge cases, tradeoffs, and constraint changes
- Delivers scored feedback (Communication, Problem-solving, Code quality) on a 1-5 scale with specific observations

Static analysis

No suspicious patterns detected.