Security researchers discovered several serious security and privacy flaws in Skype that even a ‘high school-age hacker’ could use to track not only users’ locations over time but also their P2P file-sharing activity. The security team warned that this information could easily be used for “stalking, blackmail or fraud.”
For example, they tracked one vacationing volunteer from New York to Chicago, back to New York, and then to his home in France. “If we had followed the mobility of the Facebook friends of this user as well, we likely would have determined who he was visiting and when.”
Better call Saul! … but not via Skype.