What are the best security practices for a MERN stack application?

What are the best security practices for a MERN stack application?

To secure a MERN stack application, consider implementing the following best practices: 1. Use HTTPS, 2. Validate and sanitize user input, 3. Implement authentication and authorization, 4. Use environment variables for sensitive data, 5. Regularly update dependencies.

How can I implement authentication in my MERN app?

You can implement authentication using libraries like Passport.js or JWT (JSON Web Tokens). For JWT, you would create a token upon user login and send it to the client, which can then use it for subsequent requests.

What should I do to protect against SQL injection?

To protect against SQL injection, always use parameterized queries or ORM libraries that handle query building for you. Avoid directly concatenating user input into SQL queries.

Are there any tools to help with security testing?

Yes, tools like OWASP ZAP, Burp Suite, and Snyk can help you identify vulnerabilities in your application and ensure security best practices are followed.