http://247FairPlay.com/CheatDetector/Simii167

encountert him in this round:
http://battlelog.battlefield.com/bf4/battlereport/show/1/866728150261654528/583587511/

blatant cheater.
just look at his overall hs/k

M4A1 :    147 kills / 113 Headshots -> 76.87%
M40A5:  505 kills / 461 Headshots -> 91.29%
SV98 : 573 kills /  518  Headshots -> 90.4%