come on, it is a serious question
hacked wallet is the problem every investors don't want to face
it's gonna be some way to prevent it.
I don't know why there are so many people there when discussing merit system
but they suddenly disappear when we really need some help.
I am sincerely asking this question and really wanna discuss about it.
are they busy to find merits?

?
Umm Crypdon have a good answer to your question?
Everything else should be stored in a private wallet to which you have the private keys to.
Just don't store your coins on a exchange, if the exchange gets hacked there is a big chance the hacker has access to your private keys and you don't. Also, if you're holding your coins in a private wallet (so not on an exchange) don't download fishy programs that might steal your coins out of your wallet.