Thanks to HTML5, more and more of an applications’ logic is transferred from server-side to client-side. This requires front-end developers to focus more on security. In this article I will show you how to make your apps more secure. I will focus on techniques that you may not have heard about, instead of just telling you that you have to escape HTML data entered in by users.

Of course I don’t want you to serve your content with FTP or plain TCP. What I mean is that if you want your users to be safe when using your website, you need to use SSL (HTTPS). And not only for login sites, or valuable information. For all of your content. Otherwise, when someone is accessing your app from a public network, what they see may be malformed by some hacker inside this network. This is called a main-in-the-middle attack: