I think if you have real high amount of cryptocurrencies and you are afraid of hackers, you should maybe follow the simple rules. First of all, secure your computer. So yeah there are a lot of people who say thats not gonna help. Of course a skilled hacker can bypass your security software, buts its still a better ground. The other thing is, do not login everyday or nothing in your wallet. Do not save your privatekeys and password in txt files or anyone else on your harddisk. And the most important one: Do no speak in telegram chats or message boards how much you own!