An interesting presentation uncovering the deep web by Mr. Nikhil Kulkarni a.k.a Intrud3r. In his free time, he hunts for bugs, bounties, and penetrates web applications for fun and profit.
This paper was presented at DC9180 – DEFCON Bangalore Meet 2013.
If you want to know all about TOR – The Onion Router Have a look at his Defcon_Presentation