A group of hackers was able to take control of a decommissioned satellite and use it to stream a hacking conference’s talks and hacker movies. On Saturday, at the DEF CON hacking conference in Las Vegas, Karl Koscher, one of the members of a hacking enthusiasts group called Shadytel , explained how he and his friends were able to legally stream from a satellite in geostationary orbit—35,786 km or 22,236 miles from the surface of the planet.

Source: Hackers Took Over a Commercial Satellite to Broadcast Hacker Movies