I don’t. I keep my super sensitive data in my head. I never believed in computer security and never will. But the I never believed in security in general. Why on earth you would need an antivirus for a Mac ? I don’t even remember the last time avast gave me a virus warning on Windoom 10. Nowadays it’s mostly worms, ransomeware and spyware , rarely a Trojan horse. The age of virus has long gone after the start of the age of not slow internet.The only thing I do is to backup my data via Dropbox and megasync.
If you really need security, get a computer , disconnect it from the internet. The end.
If you really need security, get a computer , disconnect it from the internet. The end.