After 30 minutes of an entire platoon reporting the same guy and getting slaughtered with a Gauss SAW and nothing getting done about it by the "Spy Drones" I decided to come here and report him, see if it does the trick. Name of the hacker is Deadfreak.
That's not a hack. You're bugged and have an avatar copy idling somewhere (likely a vehicle terminal). While technically he's exploiting the bug, it's sometimes hard to tell if it's a bugged avatar or just someone AFK. Also, Naming/Accusing is one of the forum ToS no-nos (Section 2, first set of bullet points), as a heads-up for the future.