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Security audit

case-study-writer

Security checks for vulnerabilities and agentic risk

Overview

The bundled skill provides local case-study checks with explicit approval rules, while its optional Windows application requires separate evaluation.

Review customer permissions and metric sources yourself; a clean lint report does not verify approval or legal compliance. The optional Windows application is unnecessary for the bundled workflow and falls outside this assessment.

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
  • Excessive AgencyUnrestricted Tool Access, Autonomous Decision Making, Scope Creep
  • MCP Least PrivilegeUnderdeclared Capability, Wildcard Permission, Missing Permission Declaration
  • MCP Tool PoisoningHidden Instructions, Unicode Deception, Parameter Description Injection
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
Findings (3)

Description-Behavior Mismatch

High
Category
MCP Tool Poisoning
Confidence
99% confidence
Finding

The supplied code is a case-study-related validator, not the case study writer described. Its checks are superficial text checks and its output is a lint report, not a structured customer case study. Local file reading and report writing are ordinary supporting operations; no unrelated network access or other suspicious capabilities are present.

Content

No source excerpt is available for this finding.

Skill declares no tool scope ('permissions' or 'allowed-tools') but code capabilities were detected: file_write.

Medium
Category
MCP Least Privilege
Confidence
70% confidence
Finding

Without declared permissions the skill's intent is opaque and cannot be validated.

Content

No source excerpt is available for this finding.

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 36)May include surrounding context.

md
1. Collect the interview notes, the customer's goals, the metrics and the quote approval.
2. Write the challenge and the solution in the customer's language, not the product's.
3. Show the before and the after with the numbers the customer confirmed.
4. Run the section and phrase checks so no metric or quote ships without approval.

Output contract:

Static analysis

No suspicious patterns detected.