Security audit

guess-number

Security checks for vulnerabilities and agentic risk

Overview

The skill appears to use small local files as part of its game flow, with no evidence of data theft, destructive behavior, or hidden external activity.

This looks acceptable to install if you are comfortable with a game skill creating temporary local files. Run it in a non-sensitive workspace, and consider asking the publisher to disclose the file writes and use a dedicated temporary folder with unique filenames.

SkillSpector

Vulnerability Patterns

Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
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)

Missing User Warnings

Medium

Confidence: 92% confidence
Finding: The skill explicitly creates and deletes local files (`secret.txt` and a step counter file) but does not warn the user that it will modify local state. Unannounced filesystem writes are dangerous because they create persistent state, can interfere with other runs or users, and may be abused or mis-scoped if the working directory is shared or sensitive.

Static analysis

No suspicious patterns detected.