I think until whenever hackers must always exist. they took advantage of the coin owners. all the security in my opinion depends on the owner of each coin. then always be careful in every transaction. we must store the safest place for all privacy. for example the private key of the wallet is not to be known by others, and I suggest storing it in the offline password manager.
Yeah until whenever hackers will continue to exist because they do not need the money but because they want to do that, their passion is stealing so hackers will continue to exist, you right you have to do is keep cautious, keep your private key safely , add additional security like google auth or sms verify in your wallet to make it more secure