The truth is many exchanges are running centralize system,and that is reason for the series of hack on crypto exchange.
Many exchanges are not using multi security measures.I advocate for decentralized system because In decentralized exchange,one controls his private keys,but in centralized exchange the private keys are kept on server,and once the server is broken by hackers,people will loose money.
It's behooves me to how exchanges are always being hacked almost all the time and the operators of these exchanges never seem to learn anything about how to prevent these kind of hacks. They should be made to return the hacked crypto to their customers if these kind of things happens.