I protect the assets that I have by using Google Authenticator, besides that with a complicated password. then I don't visit the website randomly and paste my private key.
It is important to always check the address of the website you are visiting so as not to get to the phishing site. google authenticator also can be hacked if you use it on the same phone that is always connected to the internet. this is very good protection, but there are already been many cases of breaking into this protection