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Security audit

Tax Calculator

Security checks for vulnerabilities and agentic risk

Overview

This is a straightforward China tax calculation skill with no evidence of hidden access, data collection, persistence, or unsafe execution.

Install only if you need China-focused tax calculations. Verify current tax rates and material transactions with official guidance or a qualified tax professional, because the skill provides reference calculations and does not update rates by itself.

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 (1)

Natural-Language Policy Violations

Low
Confidence
90% confidence
Finding
The module description and user-facing output are presented entirely in Chinese, which imposes a specific language/locale on users. The file does not indicate that the tool is intentionally limited to Chinese-speaking users or provide any opt-in or alternative language option.

Static analysis

No suspicious patterns detected.