Learn about web application security needed by software engineers every day.

Web App Security

The applications that we create for the web today have to face up to more security risks than ever before. It is extremely important that software developers enforce security best practices, such as how to add protection through HTTP headers, to protect against the myriad vulnerabilities that web applications are subject to. 
In this module, we’ll start by learning how to prevent fraudulent SSL certificates from being served to clients. Then, we’ll move on to learning how to defend against XSS attacks and clickjacking. 
In the latter half of the module, we’ll learn security practices related to HTTP cookies. We’ll also learn some tips related to security tradeoffs that we frequently make in our day-to-day work. Towards the end of the module, we’ll learn how to ward off DDoS attacks, which is crucial when our application scales. 
This module will demystify web security and help us stay on top of important security-related concerns in our web applications.

Web Application Security for the Everyday Software Engineer

## Popular web applications are prone to attack
As soon as your web application grows and becomes more popular, it is bound to attract some unsavory foes. One of the most common attacks you're likely to face is a **Distributed Denial of Service** (DDoS), where a network of machines is trying to infiltrate your webservers.

## Chapter walkthrough
In this chapter, we will look at how DDoS attacks work and will have a look at some of the ways you can protect yourself from them.


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In the next lesson, we'll study a very popular kind of attack, a distributed denial-of-service attack.

# Popular web applications are prone to attack
As soon as your web application grows and becomes more popular, it is bound to attract some unsavory foes. One of the most common attacks you're likely to face is a **Distributed Denial of Service** (DDoS), where a network of machines is trying to infiltrate your webservers.

# Chapter walkthrough
In this chapter, we will look at how DDoS attacks work and will have a look at some of the ways you can protect yourself from them.


---
In the next lesson, we'll study a very popular kind of attack, a distributed denial-of-service attack.

Introduction

Understanding The Browser

HTTP

Protection through HTTP Headers

HTTP Cookies

Situationals

DDoS Attacks

Bug Bounty Programs

Conclusion

Introduction to DDoS

Popular web applications are prone to attack