Actually the security has become a serious issue in this market. We are hearing many cases of such hacking and other digital theft. There is a possibility that Binance has stopped trading to give the sinus space or Binance wanted to check their security to make it safe from such issue. We should wait for some days to see what happen.
This is actually old news and already solved but we still don't know actually how much attacker have successfully cashed out from hacked accounts because binance haven't release that information till now. Many speculate it to be anywhere around 6000 BTC if true that is massive and several hundred accounts might got affected during the hack.