This is why they are still holding the anti-hack patch

Maybe I'm wrong, but this is what I think:

Once I saw a bunch of player were sitting together in a conner of M.M. Port, a snow nade came and killed 2 players who hacked, but others were still alive.
Maybe it's the range, but it seems like the nade knows who's hacking and only made 100 dmg to hackers but 20 or less to others.
So z8games knows how to detect these hackers?

We all know the snow nade is a zp item. Is this why z8games still holding the patch?