Possibly a cheater. i was in the server DayZ EU - DE 1420 proning in the roof of the military building which can not be seen from anywhere because it's the highest place of the area coordinates 1696.41 / 14232.19 (can be seen here https://dayz.xam.nu/#1859.53;14175.70;7 ) and shot dead in a minute or two after logged in. it was night time (pitch black), i got shot 2 times before i died and there was no gun shot sounds. exact death time was 20:12 GMT. got a video of death and the size of the video is about 600 mb
im pretty sure it was a hacker/cheater because it was not possible for him/her to see me from where i proned.