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Cure53 XSSMas Hacking Challenge 2016 Underway

Cure53 XSSMas Challenge, initiated in 2013, is a recurring hacking event, where those challenged have to solve a complex security puzzle in order to win money and fame, attempting to hack a web site in any means necessary.

'Any means', does not preclude rules of engagement. For example the 2015 challenge required hacking without user interaction, i.e setting a XSS trap and waiting for it to be activated as in the case of blind XSS.

So as not to spoil your fun with this year's challenge, which has been posted today, here we'll look back to last year's challenge required hackers to begin with index.php and progressively break through index3.php in order to obtain the price.
What was actually required is nicely summed up in:
  • Find a way to bypass the XSS filters of all browsers by realizing, the string
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