Spying the World from your Laptop Stevens Le Blond , Arnaud Legout - PowerPoint PPT Presentation

Spying the World from your Laptop Stevens Le Blond , Arnaud Legout Fabrice Le Fessant, Walid Dabbous, Dali Kaafar 1

Who Cares about Privacy? You Care about Privacy • Who wanna see his P2P downloads public? • We have a surprise for you! 2

BitTorrent Footprint on the Internet 148M IPs 3.6 ExaBytes 1) Can we identify the content providers ? 2) Can we identify the big downloaders ? 2 billion downloads 3

Roadmap 1) The content providers 2) The big downloaders 4

Methodology Join new torrents on ThePirateBay within 1 st min • • Monitor them for 24 hours 5

Identifying the Content Providers website 30% ID1,ID2,ID3 ID 15% p1, p2, p3 peer tracker peers1 peer peers2 55% peers3 Unknown We identify 70% Login of the content providers Alone 6

Roadmap 1) The content providers 2) The big downloaders 7

Methodology We can continuously spy on most BitTorrent users 8

Identifying the Big Downloaders Spying Number of Contents infrastructures Middleboxes Looking for big downloaders, we find spies and middleboxes Number of ports 9

Activity of the Spies Monitors Public HTTP proxy Public SOCKS Fraction Days Days Days We can spy on the spies 10

Take Home Messages 1) We have identified 70% of the content providers 2) Continuously spied on most BitTorrent users and filtered out spies and middle boxes 11 stevens.le_blond@inria.fr