There is no guarantee whatsoever so give yourself a layer of defense before attacking
There would really be no guarantee which i dont really rely too much on each sites security. Vulnerability would be always there.
Binance is safe just that it is better if you put it in a paper wallet
I dont know on where you do get this idea which exchange wallet is much better on paper wallet. Seriously? You are saying the reverse thing on here. Any wallet that are on 3rd party is never been safe knowing that you dont have the access on your wallets keys.