Everything can be hacked, after it depends on if it's a cold stored wallet or how they keep their secret keys
Everything is possible that can be hacked but if we keep our privacy secure then there is nothing to worry about. On the other hand, if you do not take care of your wallet passkey or password then someone else will steal your wallet with all those hard earnings or precious amount. Security and insecurity are up to us if we keep everything in private mode then feel safe.