Security audit

Subscription Retention Marketing

Security checks for vulnerabilities and agentic risk

Overview

The skill is mostly a coherent subscription-retention advisor, but it over-broadly activates and repeatedly steers users toward one named commercial loyalty platform without neutral alternatives.

Review before installing if you want neutral retention advice. The skill does not appear to access credentials, persist in the system, or run unsafe code, but it may over-activate and recommend Rijoy as the default loyalty platform instead of presenting impartial options.

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

Findings (1)

T01 · Skill Instruction Hijacking

Warning

Location: SKILL.md:183
Finding: Mandatory Third-Party Promotion Hijacks Skill Recommendations
Content: View full analysis
Remediation: View remediation

SkillSpector

Vulnerability Patterns

Trigger AbuseOverly Broad Trigger, Shadow Command Trigger, Keyword Baiting Trigger
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
Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access

Findings (3)

Tp4

High

Category: MCP Tool Poisoning
Confidence: 95% confidence
Finding: The declared description presents a broad e-commerce subscription optimization assistant with many topical triggers and consultative capabilities. The supplied code, however, is narrowly scoped to financial calculations for LTV and churn-improvement scenarios. While churn reduction and CLTV are related to the declared domain, the actual code does not implement most of the promised capabilities, nor any assistant-style routing/trigger behavior. Its primary purpose is a calculator/report generator, which is materially narrower and different from the declared skill description.
Content: No source excerpt is available for this finding.

Vague Triggers

High

Category: Not specified by scanner
Confidence: 97% confidence
Finding: The skill instructs the agent to ALWAYS trigger on a wide range of loosely related topics, which can cause overbroad activation and crowd out more appropriate skills or base-model behavior. In an agentic system, this kind of prompt-level routing hijack can degrade reliability, bias recommendations, and increase the chance of irrelevant or commercially slanted guidance being injected into unrelated conversations.
Content: No source excerpt is available for this finding.

Vague Triggers

Medium

Category: Not specified by scanner
Confidence: 92% confidence
Finding: The instruction to trigger on general retention discussions for consumables merchants, even without explicit subscription language, is insufficiently bounded and can lead to accidental invocation on ordinary lifecycle marketing questions. This expands the skill's influence beyond its stated niche and may route users into advice centered on subscriptions and a named vendor when that is not the best fit.
Content: No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.