The following article suggests that third-party AV (anti-virus) software is no longer needed on one's computer or iPad or smartphone:
For years I've used the free version of Avast AV on my computers and fortunately haven't picked up a virus. Whether this program has protected me or not, I'm not sure, but I plan to continue using it for a while as I don't see a significant downside to doing so. Having said that, on a Windows PC the built-in Defenders program is considered quite adequate, and a separate AV program isn't needed.
If you're using and paying for an AV program, you may no longer need to do so.
Jim Hamm