What is Express security middleware?

What is Express security middleware?

Express security middleware refers to various middleware functions used in Express.js applications to enhance security. These can include tools for preventing cross-site scripting (XSS), SQL injection, and other vulnerabilities.

Can you give me examples of popular security middleware for Express?

Sure! Some popular security middleware for Express include Helmet, which helps secure HTTP headers, and express-rate-limit, which limits repeated requests to prevent DDoS attacks.

How do I install Helmet in my Express app?

You can install Helmet using npm by running npm install helmet. Then, you can use it in your app by requiring it and adding it as middleware: app.use(helmet());.

Are there any best practices for using security middleware?

Yes, always keep your middleware updated, configure them properly according to your app's needs, and regularly test your application for vulnerabilities.