this is a warning !!!
Top 10 big exchanges is the next target hackers !!!
good luck, and be careful 
How did you know that the top big exchanges will be the next target of scammers? Is there any proof?
I think big exchanges is not that easy to compromised by hackers. Big exchanges have tight security by having 2fa, like email and sms verification which is not easy for hackers to take.
Probably Spam/FUD or anything that disgraceful things to do to hurt crypto currency. Although its not bad if you will withdraw your funds for saftey purposes. And also, Storing your assets in the exchange is big mistake for a traders. Never trust your assets to exchange no matter how trusted it was
Just to be safe, even if this is just a spam/fud, I think I'll withdraw my funds for trading and store it for now in my hardware wallet.
I am not in a high alert, but I prefer to keep the safety of my funds. I don't want to face any unnecessary things to happen for my investment.
good move for you because your an advance thinker but for us slow thinkers i think we shall prefer our coins on an exchange for a while because exchanges themselves dont even give a warning and what the op is saying is still questionable because he didnt add some links or proofs to backed his sentence . @op , of course exchanges are one of the target lists by hackers and all of us are aware with that because exchanges hold tons of money .