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Security audit

ia-c-systems

Security checks for vulnerabilities and agentic risk

Overview

This is a C coding-guidance skill with disclosed Markdown instructions and no evidence of hidden execution, data access, persistence, or exfiltration.

Before installing, treat this as a strict C engineering checklist: it may ask your agent to read nearby project files and run local build or sanitizer commands, but the reviewed package does not add executables or hidden background 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 (5)

Ae1

High
Category
analysis-evasion
Content
- For memory, external input, assertions, ABI changes, or shared-helper contracts: [runtime-safety.md](./references/runtime-safety.md).
Confidence
100% confidence
Finding
Referenced artifact was not completely inspected

Ae1

High
Category
analysis-evasion
Content
- For compiler setup, tests, build provenance, packaging, or performance claims: [build-and-measurement.md](./references/build-and-measurement.md).
Confidence
100% confidence
Finding
Referenced artifact was not completely inspected

Ae1

High
Category
analysis-evasion
Content
- [memory-safety.md](./references/memory-safety.md).
Confidence
100% confidence
Finding
Referenced artifact was not completely inspected

Ae1

High
Category
analysis-evasion
Content
- [correctness-traps.md](./references/correctness-traps.md).
Confidence
100% confidence
Finding
Referenced artifact was not completely inspected

Hidden Instructions

High
Category
Prompt Injection
Content
Out of scope:
- Acting as the runtime instructions themselves (those live in `SKILL.md`).
- Trigger phrasings already covered by adjacent `ia-*` skills (`validate-plugin` flags >70% description overlap as DUPLICATE_TRIGGER).
- <!-- to fill in: domain-specific exclusions when the skill drifts -->

## Trigger Context
Confidence
70% confidence
Finding
Hidden instructions were detected in comments or invisible text. These could contain malicious directives. Manual review is recommended.

Static analysis

No suspicious patterns detected.