I wouldn't trust nicehack again, come on guys we know that they are giving convenience when it comes to the profit of our mined coins.
But it just happened that their security isn't good as others and they hired a past hacker or who knows that hacker is still on his own agenda and keeps on doing nasty things.
If I were you, I'll move to another pool and will not be fooled again by them.
What is the old saying.....Fool me once, shame on you; fool me twice, shame on me!!