I think hackers are always a big thread for the big crypto currency exchanges. If the hackers can conquer the network of a exchange, it will have a very big images damage, a drop of the exchange coin or token and a lot of money will also be lost. In the worst case a exchage have to close their business. So i think it can be ver profitable to invest in such a coin, but it also has a very high risk to invest in that. A other big thing is not only the price, also a use should be connected to that, like daily dividends.