According to some sources, Binance was hacked just to hide the sale bitcoin of the Japanese (mt.gox) ( ~800k BTC ). If there are more information about the hacking exchange.Then, BTC breaking below 4xxx, maybe 2k5, I think the best way : u should to sell all your BTC, altcoin. All exchange will die. Thats' the second mt.gox. ***Attention from now until 7/4/2018.
The Chinese exchange is not easy to hack. If so, it is deliberate......
I think that is possible. Because the wallet MEW was hacked and lost more than $ 17 million. Hackers can invade and steal lots of money.
But that 800k bitcoin will not be dissipated, they will sell that bitcoin at a cheap price and that bitcoin is still available in the Crypto market. Do not worry too much.