    Gain insights into HTTP security headers, learn their risks, explore solutions, and discover how to implement them using Helmet for enhanced web application security.

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This course teaches you hands-on practical use of HTTP security headers as browser security controls to help secure web applications.

For each HTTP security header that can enhance your web application security, you'll learn what is the overall risk of not implementing it, and what does a proposed solution help with. Finally, you'll learn how to implement and configure the security header with Helmet, a popular and well maintained Node.js package on npm.

Web Application Security: Understanding HTTP Security Headers

We looked at several tools to help us find security issues in web applications:

* **WebPageTest**: An online web performance and security scanning tool for websites.
* **Lighthouse**: Browser-based web assessment tool for performance, accessibility, security, and more.
* **Check My Headers CLI app**: a handy command-line Node.js application to test a website's headers.


In this chapter, we learned how to test for HTTP security headers and vulnerable JavaScript libraries using various security tools. Let's test your knowledge in this quick re-cap.

Introduction

HTTP Security Headers

Testing for Security Headers

What's Next?

Summary