Security audit
Update Signature Verifier
Security checks for vulnerabilities and agentic risk
Overview
This skill is a disclosed, purpose-aligned guide for checking update signature continuity and does not include executable payloads or hidden behavior.
Before installing, understand that this is an advisory audit skill: it may ask you to provide version and signature metadata or let the agent look up public publisher records, but it does not itself install code or make changes. Treat its reports as evidence to review, not as a complete guarantee that a signed update is safe.
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
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.