Protecting Against XSS (Cross Site Scripting) Exploits in Ionic (Angular)

Protecting Against XSS (Cross Site Scripting) Exploits in Ionic (Angular)

In this tutorial, we investigate when Angular's automated XSS protect will prevent exploits and when it won't. It is important to note that although the client side code can help protect against XSS vulnerabilities, it should not be the only mitigation step you take against these attacks.

In this article we are going to explore when Angular’s XSS security model will help protect your application from XSS JavaScript injection attacks, and when it won’t. It is important to note that although the client side code can help protect against XSS vulnerabilities, it should not be the only mitigation step you take against these attacks.

We will be dealing with a Stored XSS attack (one of the three main types of XSS attacks), which means that the malicious code has been stored in our database (e.g. a user’s comment or status that includes some malicious HTML). Ideally, we would have never allowed executable JavaScript to have been stored in the database in the first place, but having Angular or our own frontend code as our second line of defence is a good idea. The idea of having multiple lines of defence to protect against vulnerabilities, just like having some form of two-factor authentication for your logins, is often referred to as Defense in Depth.

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