T09 · Insecure Skill Coding Practices
Error
- Location
behavioral_finance_skill.py:392- Finding
Fabricated Analysis Presented as Actionable Financial Guidance
- Content
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- Remediation
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Security audit
Behavioral Finance
Security checks for vulnerabilities and agentic risk
Overview
The skill does not show malware-like behavior, but it presents simulated and random trading analysis as actionable financial guidance.
Review this carefully before installing. It should be treated as demonstration-only financial logic unless the publisher adds real data-provider integration, provenance, deterministic calculations, reproducible backtests, and clear synthetic-data warnings. Do not connect it to automated trading or rely on its recommendations for real investment decisions in its current form.
Vulnerability Patterns
- Insecure Skill Coding PracticesFinds exploitable flaws such as hardcoded secrets or command injection
- 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
Findings (1)
Vulnerability Patterns
- MCP Tool PoisoningHidden Instructions, Unicode Deception, Parameter Description Injection
- 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
Findings (2)
Natural-Language Policy Violations
Medium
- Category
- Not specified by scanner
- Confidence
- 95% confidence
- Finding
The file consistently uses Chinese for the description, instructions, examples, and warnings, but does not indicate that the skill is region-specific or that users may opt into another language. This can violate a language/locale policy where skills must not force a specific language without user choice or documented justification.
- Content
Natural-Language Policy Violations
Medium
- Category
- Not specified by scanner
- Confidence
- 94% confidence
- Finding
This Python skill is entirely described in Chinese, and its user-facing outputs and labels throughout the file are also hard-coded in Chinese. The policy requires flagging language or locale constraints when a skill forces a specific language without offering the user a choice or documenting a justified region-specific limitation.
- Content