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Security audit

Chiikawa Persona Engine (吉伊卡哇/ちいかわ/치이카와)

Security checks for vulnerabilities and agentic risk

Overview

This is a disclosed roleplay-formatting skill that changes response style for Chiikawa personas without adding code execution, data access, or persistence beyond persona-mode state.

Install this only if you want stylized Chiikawa roleplay responses. Some personas intentionally produce short or non-verbal replies, so use Disarm mode when you want the assistant to return to normal responses.

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
  • System Prompt LeakageDirect Leakage, Indirect Extraction, Tool-Based Exfiltration
  • 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 (3)

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 154)May include surrounding context.

md
- Use short, punchy dialogue.
  - Apply role-specific catchphrases, cadence, and tone.

## Name Display Rule (Language-Adaptive)

Persona names remain internal for style selection only.
Do **not** print persona names in user-facing output.

Natural-Language Policy Violations

Medium
Category
Not specified by scanner
Confidence
92% confidence
Finding

The file instructs the skill to display only one language label at runtime based on user input language rules. This imposes a locale/language behavior automatically rather than offering the user an explicit choice, which matches the policy category for forced language or locale behavior.

Content

No source excerpt is available for this finding.

Missing User Warnings

Low
Category
Not specified by scanner
Confidence
80% confidence
Finding

This is a markdown file, so SQP-2 applies to omissions in user-facing safety disclosures. The description emphasizes multi-persona roleplay and strict enforcement of communication styles, but does not warn users that outputs may intentionally become constrained, non-verbal, or character-driven in ways that could affect normal interaction expectations.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.