More and more Ajax developers are choosing JSON for their data transfer instead of XML. Although XML has been the pillar of Ajax (X is for XML), JSON has become the choice of most developers because it was particularly built for JavaScript. Compared to XML, JSON is lighter and will work faster compared to XML. This lightweight function enables Ajax based websites and applications to run faster.
The reason why JSON is very efficient in data transmission is its ability to function in itself. By this function we mean that JSON has the ability to “EXECUTE” without the aid of other functions. XML is only a format which will be used to transmit data and files, but JSON is very effective in terms self execution.
Instead of using additional codes and functions from the framework and the server, JSON will basically work on itself and EXECUTE when available. The combination of JavaScript and JSON wherein they function independently and work at the same time makes JSON a perfect pairing for Ajax.
However, the fact that JSON is self executing has made JSON one of the most popular tools for hacking Ajax websites and applications. In previous blogs, we have pointed out one of the biggest problems in Ajax is Cross Site Request Forgery or CSRF. With this function, the hacker has the ability to control not only the data of the program but with the general functions as well. All the hacker has to do is to upload a file with a malicious JSON code and let it run through. In no time at all, JSON should be able to access the server and take over the controls and functions of the applications.
When you opt to use JSON in your Ajax based site or application, be sure to build JSON in a very secure environment. You have to use this especially when your application’s content is based on the user uploads. Anyone who has basic knowledge of JSON and simple application could easily hack the system and extract the content of your server and objects transmitted.
To ensure your JSON is secured, consider registering the types of JavaScript class that goes inside your system. The server will screen everything that goes in and if something is not according to the class that you specified, it will flag and will give you the ability to review the incoming content.
Another trick that you can use in your JSON is to register it according to the class type you specified and then brace it with another function. Imagine JSON being wrapped with another function so that it will not be detected by the hacker. They will just keep on guessing the exact class of JSON you will be using which could take forever. You will have to manually encode each JSON which could take some time. However, considering the security it will add, the time spent in securing data is worth it.
Always secure your JSON, it is the most convenient data mark-up you will use but it is prone to different security problems that you should cover up before implementation.
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