I Know Where You are and What You are Sharing

I Know Where You are and What You are Sharing: Exploiting P2P Communications to Invade Users’ Privacy Abstract: In this paper, we show how to exploit real-time communication applications to determine the IP address of a targeted user. We focus our study on Skype, although other real-time communication applications may have similar privacy issues. We first design a scheme that calls an identified- targeted user inconspicuously to find his IP address, which can be done even if he is behind a NAT.