SunTiger:
Just installed Ubuntu and it seems to be working fine, also installed a VPN which is working. Does anyone use antivirus software with Ubuntu, and if so which one? Most users seem to think antivirus isn't necessary
You can try this.... https://www.clamav.net/ but in general, not found one needed.
See here... https://www.linuxcapable.com/how-to-install-clamav-on-ubuntu-22-04-lts/
It's in the Ubuntu repository so no need to download from the ClamAV site directly.