New hack?

FIRST OFF im not begging so dont say i am.

today i was playing a game in egypt and i was my normal ping/fps i seen someone said that someone else was a hack (go figure) i check the scoreboard and i see someone is 16/0 with 160 ping and i seen him get a 3kill with a uzi so i figured it was a d.x.t vip i was about to leave when i thought ill go check so i got out of spawn and boom im instantly getting shot at by a guy thats in a pillar. i know that no smoking was patched LONG ago so it couldnt be that

anyone know what that guy used to make him be able to go inside walls?/

yeah i see this often too.