Cloudflare Workers Security Comprehensive security patterns for protecting Workers and APIs. Quick Security Checklist Critical Rules 1. Never trust client input - Validate and sanitize everything 2. Use secure secrets - Store in Wrangler secrets, never in code 3. Implement rate limiting - Protect against abuse 4. Set security headers - Prevent common attacks 5. Use CORS properly - Don't use in production Top 10 Security Errors | Vulnerability | Symptom | Prevention | |---------------|---------|------------| | Missing auth | Unauthorized access | Verify tokens on every request | | SQL injectio…