I have another dummy me question I was watching Criminal Minds TV show and the killer had a web feed that the FBI was trying to track the location on.

In the tv show they said that he was being hard to track because he was bouncing off of 12 different Proxies all over the world.

So is this for real

What do you do? go to a proxy site and then in the proxy site go to another and then another.

If this is real could it be hard to trace really?