Does it provide templates for reporting findings?

Yes, it includes a standardized variant-report-template to help you document the location, confidence level, exploitability, and priority of every potential bug found.

What is variant analysis in software security?

Variant analysis is the process of finding similar vulnerabilities in a codebase after a single bug has been identified by searching for the same root cause or pattern in different locations.

Can I use this for initial vulnerability discovery?

This skill is specifically designed for hunting variants of known issues. For initial discovery, it is recommended to use audit-context-building or domain-specific audit skills first.

Which tools does this skill support?

It provides specific guidance and templates for ripgrep, Semgrep (including taint analysis), and CodeQL for deep interprocedural and cross-functional analysis.

How does it help reduce false positives?

The skill follows an iterative generalization process, recommending that you change only one code element at a time and stop generalizing when the false positive rate exceeds 50%.

Variant Analysis Expert

Name: Variant Analysis Expert
Author: monmacllcapp

bymonmacllcapp

0•

セキュリティとテスト

Identifies and hunts for recurring security vulnerabilities and bug patterns across entire codebases using systematic pattern-based analysis.

The Variant Analysis skill transforms Claude into a security research assistant capable of finding hidden bugs by analyzing known vulnerability patterns. After identifying an initial issue, this skill guides you through a rigorous five-step process to abstract the root cause and search for similar manifestations across your entire repository. By leveraging industry-standard tools like Semgrep and CodeQL, it helps you move from simple string matching to sophisticated data-flow analysis, ensuring that a single bug fix becomes a comprehensive security hardening effort. It is an essential tool for developers performing post-incident audits or building custom linting rules to prevent recurring regressions.

主な機能

01Systematic 5-step variant hunting methodology

02Standardized triage templates for exploitability and priority reporting

030 GitHub stars

04Pattern abstraction for Semgrep and CodeQL query building

05Iterative generalization techniques to balance precision and recall

06Cross-functional data flow and taint analysis guidance

ユースケース

01Building custom Semgrep or CodeQL rules based on internal bug history and known anti-patterns

02Performing comprehensive security audits following the discovery of a critical logic or data-flow vulnerability

03Scaling a single security patch to cover all similar vulnerable code paths repository-wide

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add monmacllcapp/skill-forks variant-analysis

For use in Claude.ai and ChatGPT

Download Skill