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tracking 2
Man, as for the other challenges (app and flash according to your forum posts), you don't have the right answer.
Talking about gathering information for this challenge… well, you can do it with any kind of browser, even with links from your terminal, seriously.
I suggest you to read a bit more about IP Address Lookup thumbs up
P.S.: Be aware that you need the IP address of the attacker (you can use any browser for this task)