ReconJS is a javascript library used for statically analyzing arbitrary Javascript code for security threats.
The ReconJS Site gamifies improving ReconJS. The site is an adversarial demo of ReconJS. But it's more than that, too. Get past ReconJS' security checks, and your code will be used to improve the ReconJS library.
Submit code that gets past ReconJS and changes the value of window.target.
You type some code into the editor and hit submit it.
ReconJS checks the code for security threats.
If ReconJS finds no threats :
The window object gets a property target with a random and arbitrary value.
Your code is run.
The value of window.target is read.
If the value of window.target has changed :
You win! And your code will be saved to a database for improving ReconJS.
Else :
Nothing happens.
window.target is deleted.
Else :
The specific security threat(s) will be logged to the screen.