Secure Coding Guide for Web Applications Comprehensive secure coding practices for web applications. Approach code from a bug hunter's perspective and make applications as secure as possible without breaking functionality. When to Use This Skill - Writing new web application endpoints or API routes - Reviewing PRs that handle user input, authentication, or file uploads - Implementing authentication, authorization, or session management - Working with file uploads, redirects, or URL-based features - Adding security headers or CSP policies - Avoid using for infrastructure/network security — use…