best antivirus

Don't stick your dick in crazy.

Just use windows defender if he's on windows. It's built in and you don't have to mess with it. Heuristics are pretty decent and you can set it to do what you want. Just tell him to stay off porn sites and don't follow weird links, he won't have to worry too much about viruses.

People still use antivirus software?

Linux, specifically Kubuntu or maybe Mint.

Set it up with Brave browser and Libre Office and walk away. That'll cover 99% of common use cases and you never have to worry about being sodomized by Windows or what it invites in again.

Hitler 2.0 ??

CP/M running on a Zilog Z-80 machine.

(edit) I apologize, I realized that you asked an honest question for a fren. I use Linux with a hard-wired Firewall. Not having used any Windo$ products sine 1999, I can't advise you. Again, Comrade, my apologies.

It's probably an unnecessary warning, but somebody should've said Not-Norton by now. It's like a subscription to malware.

Can he go Linux? I think Lindows is back?

has he tried MSDOS no one hacks those now adays

windows 10 is just fine.