We've suspected this guy for a few days now, he came into the server as level 1 about 2 days ago and knew where everyone was. We even saw the "owned by koncept" text spam when he killed but I didn't get the screenshot in time.
I spec'd him some today and he went from rank 1 to rank 55 in 2 days, with many weapons fully ranked.
Evidence for time screenshot was taken: http://www.xfire.com...?view#102447118
2 Days ago:
Convicted & Banned - Rank/weapon hack
Original thread by Locutus, moved from old site