Node.js API Masterclass with Express and MongoDB - XSS Protection & Security Headers

The video tutorial covers the implementation of security headers using the Helmet package to enhance API security. It explains how to install and initialize Helmet to add various security headers, such as DNS prefetch control and XSS protection. The tutorial also introduces the XSS Clean package to prevent cross-site scripting by sanitizing input data. A demonstration shows how XSS Clean prevents script tags from being stored in the database. The video concludes with a brief mention of rate limiting as a future topic.

What is the primary purpose of using the Helmet package in a web application?

• To improve the application's performance

• To handle database connections

• To add security headers to the application

• To manage user authentication

Which of the following is a feature provided by Helmet?

• Load balancing

• Data encryption

• User session management

• DNS prefetch control

What command is used to install the Helmet package in a Node.js application?

• npm install node

• npm install helmet

• npm install express

• npm install security

How can you verify that Helmet has added security headers to your application?

• By checking the application logs

• By using Postman to inspect the headers

• By checking the console logs

• By running a security scan

What is the main function of the XSS Clean package?

• To compress HTTP responses

• To manage user sessions

• To sanitize input and prevent cross-site scripting

• To optimize database queries

What potential risk does the XSS Clean package help mitigate?

• SQL injection attacks

• Cross-site scripting attacks

• Denial of service attacks

• Man-in-the-middle attacks

What is the next topic to be covered after implementing security headers and XSS protection?

• Rate limiting

• User authentication

• Load balancing

• Database optimization