Yeah 342,000 Ethereum moved upbit to unknown wallet and upbit moved assets hot wallet to cold wallet.
VinDAX also got hacked and they lost $500,000 worth of crypto assets.

If BCnex protect the funds of users/ insurance of funds then i am sure many traders will move other exchanges to BCNEX platform.
Yes, the exchange that many people like is to provide security for their funds, protect from hackers, because there have been many hacking exchanges globally, BCNEX must learn about this situation in order to further strengthen the security of exchanges