Funds are no longer safe with these exchanges and that's the reason why it's very unsafe to use them for storing our crypto assets. So many hacks have happened in this year alone especially on big exchanges.
It will be very difficult for the upbit hackers to trade the stolen coins
Those coins would be traded for sure but not for now yet the issue is still hot but when it gets cool down then thats the right time for them to move those coins.
Its true that there are still lots of exchange hacks as of this year which isnt a new thing to talk about when it comes to possibilities knowing that these platforms do have
the most amount of money to steal on. For now we do even have some recent news about IDAX where CEO is nowhere to be found. Exchange problems continues.