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Security audit

Cn Timestamp Tool

Security checks for vulnerabilities and agentic risk

Overview

This is a small timestamp conversion skill with disclosed China/Shanghai-oriented defaults and no evidence of hidden, persistent, destructive, or data-exfiltrating behavior.

Before installing, note that the documentation and help text are in Chinese and the default timezone is Asia/Shanghai unless overridden where the CLI supports it. The inspected artifacts do not show hidden network access, credential use, persistence, or destructive behavior.

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 (3)

Natural-Language Policy Violations

Low
Confidence
86% confidence
Finding
The markdown states a fixed default timezone of Asia/Shanghai, which is a locale-specific default presented without asking the user to choose or opt in. This can violate language/locale policy expectations when a skill is not clearly documented as region-specific.

Natural-Language Policy Violations

Low
Confidence
92% confidence
Finding
This code file contains natural-language descriptions and help text that are presented only in Chinese. Under the stated policy, forcing a specific language without opt-in is a natural-language policy issue unless the locale restriction is explicitly justified or the user is given a choice.

Natural-Language Policy Violations

Low
Confidence
95% confidence
Finding
The argparse description, examples, subcommand help, and argument help strings are all written only in Chinese. This creates a language policy concern because the skill does not offer any user-selectable language or explain why Chinese is required.

Static analysis

No suspicious patterns detected.