Ask what system they are using Eg jasper, xexon. See what they say then ask what kind of mods are in the patch such as killstreak menu, Ufo etc... And if they charge headshots they are fake, As you don't need headshots when you can just mod them

Hope this helped! And be sure to make sure there verified on NGU and look at there post and rep count as that shows a scammer As they have low posts/rep.
---------- Post added at 03:24 PM ---------- Previous post was at 03:19 PM ----------
Originally posted by TgKhali
Always ask the supposed seller what type of Jtag system they use and what do they run it with. The real answer is XeXLoader for the second one. If they can't think of what type of Jtag they are using, it's quite clear-same for the XeXLoader.
Hope I helped!!
XexLoader is not the only one, The newest one is XeXMenu I'm sure.