> "The NSA then cookies that ad, so that every time you go to a site, the cookie identifies you. Even though your IP address changed [because of Tor], the cooki

> "The NSA then cookies that ad, so that every time you go to a site, the cookie identifies you. Even though your IP address changed [because of Tor], the cookies gave you away," he said. In other words, just using tails will solve this issue because every session gives you a clean environment.