AVAST offers a great FREE version of antivirus for your computers. They will occasionally prompt you to “upgrade” to a premium paid version, but that is not necessary. The FREE version will serve you well. You will be asked to “register” once a year, with your email, to keep the FREE license.

Use the link below to download AVAST:

https://www.avast.com/en-us/download-thank-you.php?product=FAV-ONLINE&locale=en-us