Security Headers

Add security headers to protect the application:

1. Add Content Security Policy (CSP)
2. Implement HTTP Strict Transport Security (HSTS)
3. Add X-Frame-Options to prevent clickjacking
4. Add X-Content-Type-Options
5. Add Referrer-Policy
6. Configure CORS securely

Create middleware or configuration based on framework to set these headers on all responses.

Success Criteria

• All recommended security headers implemented
• CSP policy configured without breaking functionality
• HSTS with appropriate max-age set
• Headers verified on all routes
• CORS configured securely with proper origins

Completion Checklist

• Test headers with security scanning tools
• Create tests verifying header presence
• Document header configuration
• Verify headers work in production environment
• Test for header conflicts or issues