Security Checklist ✅ Implemented 1. Security Headers Content Security Policy (CSP) X-Frame-Options: DENY X-Content-Type-Options: nosniff Referrer-Policy: strict-origin-when-cross-origin Permissions-Policy 2. Rate Limiting Contact form: 5 requests/hour API endpoints: 60 requests/minute 3. Input Validation & Sanitization Zod validation for contact form Email format validation Message length limits 4. Dependencies Security Regular dependency updates GitHub Dependabot enabled Security scanning 🔄 To Implement 1. Authentication & Authorization Add proper authentication for admin sections Implement role-based access control if needed 2. Monitoring & Logging Set up error monitoring (Sentry/LogRocket) Implement security event logging 3. Advanced Security Implement CSRF tokens Add security.txt file Set up HSTS preload 🔒 Best Practices Code Security ✅ Use TypeScript for type safety ✅ Validate all user inputs ✅ Sanitize output ✅ Use parameterized queries (if using database) API Security ✅ Rate limiting ✅ Input validation ✅ Proper error handling (no sensitive data exposure) Deployment Security ✅ Use HTTPS only ✅ Secure environment variables ✅ Regular security updates