How can I improve the security of my Next.js frontend application?

How can I improve the security of my Next.js frontend application?

To enhance security in your Next.js app, consider implementing measures like Content Security Policy (CSP), sanitizing user inputs, and using HTTPS.

What is Content Security Policy and how do I implement it?

CSP is a security feature that helps prevent XSS attacks by controlling resources the user agent is allowed to load. You can implement it by adding a Content-Security-Policy header in your server configuration.

Are there any libraries that can help with input sanitization?

Yes, libraries like DOMPurify and validator.js are great for sanitizing user inputs in your Next.js application.

What about authentication? Any recommendations?

For authentication, consider using NextAuth.js, which provides a simple way to add authentication to your Next.js app.