There is a new project that would be taking care of this problem, it is the project's signature that I am presently wearing, they aim to create a cold vault where you can store all your private keys and even be able to recover the. In the event of a loss.
I do not think that the storage of the key causes someone problems, you can just save the private key on a flash drive and store there, without connecting the flash drive to the Internet , I think it is worth installing a phishing plugin that will protect you from this as usually hacked phishing