Security audit

BestChange

Security checks for vulnerabilities and agentic risk

Overview

The skill is purpose-built for BestChange exchange lookups, but it mandates referral-style links and sends blocked financial requests to an external service for later analysis without clear user consent or privacy limits.

Install only if you are comfortable sending exchange search details, amounts, payout rails, and some blocked-request text to the hosted BestChange MCP operator. Treat returned links as referral/tracked BestChange click links, and independently verify exchanger reputation, exact network, payout rail, fees, limits, and destination details before sending funds.

A.I.G

Vulnerability Patterns

Skill Instruction HijackingAlters the agent's session goals or safety constraints when the skill loads
Insecure Skill Coding PracticesFinds exploitable flaws such as hardcoded secrets or command injection
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 (2)

T01 · Skill Instruction Hijacking

Error

Location: SKILL.md:171
Finding: Mandatory Affiliate Link Injection into Financial Recommendations
Content: View full analysis
Remediation: View remediation

T09 · Insecure Skill Coding Practices

Warning

Location: SKILL.md:132
Finding: Excessive Transmission of Financial Requests and Diagnostic Context
Content: View full analysis
Remediation: View remediation

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

Static analysis

No suspicious patterns detected.