Resources
MERN Security Checklist
Use this checklist to validate security and resilience before launching a MERN application.
Authentication
- Use secure session handling or short-lived JWTs with refresh rotation.
- Enforce password strength and rate limiting on auth routes.
- Implement MFA where possible for admin roles.
API Protection
- Validate all inputs and sanitize payloads.
- Apply rate limiting, abuse detection, and request logging.
- Return consistent error responses without leaking internals.
Data Layer
- Use least-privilege database roles.
- Encrypt sensitive data at rest and in transit.
- Monitor slow queries and ensure index coverage.
DevSecOps
- Enable dependency scanning and container image checks.
- Automate build and release gates.
- Monitor production errors and security alerts.