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Security audit

Retrospective Agent

Security checks for vulnerabilities and agentic risk

Overview

This is a visible retrospective and lesson-logging skill with scoped local notes and no hidden automation or executable code.

Before installing, be comfortable with the skill keeping visible retrospective notes in your workspace. Avoid logging secrets or sensitive personal details, and review any proposed global lesson promotion before letting it influence future agent 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
  • Excessive AgencyUnrestricted Tool Access, Autonomous Decision Making, Scope Creep
  • System Prompt LeakageDirect Leakage, Indirect Extraction, Tool-Based Exfiltration
  • Memory PoisoningPersistent Context Injection, Context Window Stuffing, Memory Manipulation
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
Findings (4)

Memory Manipulation

High
Category
Memory Poisoning
Confidence
80% confidence
Finding

Skill manipulates agent memory, state, or stored context. Memory corruption can alter personality, override safety rules, or cause unpredictable behavior.

Content

Scanner excerpt · SKILL.md (reported line 11)May include surrounding context.

md
Use this skill to capture execution lessons in a controlled, auditable way.

This skill exists to improve how the agent works over time.
It does not create a second factual memory system, rewrite identity, or invent autonomy.

## Core principles

Direct Prompt Extraction

High
Category
System Prompt Leakage
Confidence
85% confidence
Finding

Skill contains instructions that could directly expose system prompts, internal rules, or hidden instructions to users or external parties.

Content

Scanner excerpt · SKILL.md (reported line 171)May include surrounding context.

md
Avoid AGI theater, inflated claims, and vague self-improvement language.
Prefer operational wording like "lesson", "pattern", "correction", and "recommended update" over dramatic wording like "optimize myself" or "evolve".

## Output rule

Lead with the useful retrospective or lesson.
Do not narrate the framework unless the user asks.

Memory Manipulation

High
Category
Memory Poisoning
Confidence
80% confidence
Finding

Skill manipulates agent memory, state, or stored context. Memory corruption can alter personality, override safety rules, or cause unpredictable behavior.

Content

Scanner excerpt · references/promotion-rules.md (reported line 49)May include surrounding context.

md
## Reversal rule

If a confirmed rule is later contradicted:
1. do not delete history blindly
2. mark the previous rule as reversed or superseded
3. record the new rule with date and scope
4. prefer the most recent confirmed guidance at the same scope

Autonomous Decision Making

Medium
Category
Excessive Agency
Confidence
75% confidence
Finding

Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.

Content

Scanner excerpt · SKILL.md (reported line 148)May include surrounding context.

md
- rewrite `USER.md`
- patch config
- send messages
- install companion skills without approval
- infer preferences from silence
- store credentials, secrets, or sensitive personal data
- claim autonomous monitoring unless a real scheduler exists

Static analysis

No suspicious patterns detected.