nexon complete ban?

what methods does nexon use to ban on combat arms, because i used to hack a long time ago and got mac adreess banned but now i chnaged it and havent played in over 6 months and reformatted since then and every new account i make is banned

Don't "over-hack" and you wont get banned.

But you're hacks are good.
We don't wanna stop using it.