I was on a server when I saw this guy flying around at Berezino. He was very laggy and jumped a few meters each time he moved. I started to take screenshots (my rig isn't powerful enough to record, I barely have 15fps this time), and then he notices me. I tried to shot me but I avoided his mosin shots and I attacked him with axes. He seems to understand I cannot hit me (bad aim, like all cheaters) so he flew away. Literally. He flew on top of a roof and started to shot at me from there. Eventually He succeed and kills me. I was on this server :
lastMPServer="82.96.119.190:2702";
lastMPServerName="Oldschool DayZ Hardcore ";
between 23:30 and 0:00 CEST on 08 sept 2014.
I don't know what you can do about this, probably nothing, but at least you know and have data.
Here the screenshots : http://imgur.com/a/T4oHr