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Security audit

Brutalist Skill

Security checks for vulnerabilities and agentic risk

Overview

This is a visual design guidance skill with no code execution, persistence, credential handling, or hidden behavior.

Install this as a style skill if you want this specific industrial/terminal aesthetic. Review generated UI for readability, accessibility, and localization, especially where the skill pushes all-caps text, very small metadata text, tight line-height, and visual noise effects.

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 (1)

Natural-Language Policy Violations

Medium
Category
Not specified by scanner
Confidence
91% confidence
Finding

The skill explicitly mandates uppercase-only text for multiple UI text classes, which can reduce readability, interfere with screen reader pronunciation in some contexts, and create localization issues for languages with case-specific rules. Because this is framed as an absolute requirement rather than a stylistic option with exceptions, implementers may propagate inaccessible patterns across an entire interface.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.