This is a security testing template that walks you through finding authentication vulnerabilities in web apps. It covers the standard attack surface: weak passwords, broken session handling, MFA bypass attempts, and credential stuffing. You'll need Burp Suite and a brute force tool like Hydra. The skill comes from a larger template collection with nearly 28K GitHub stars, so it's part of a well-maintained set. Honestly, this is most useful if you're doing penetration testing or security audits and want Claude to help structure your authentication attack workflow. It won't replace actual security expertise, but it can help you remember the checklist of things to test when hunting for OWASP Top 10 issues.
npx skills add https://github.com/davila7/claude-code-templates --skill broken-authentication-testing