DO NOT add additional third-party so-called Virus protection to your already well-protected Macintosh computer. everything needed to keep your mac running just fine was included in the doc, except ONE: a drive on which to store your backup.
Macworld used to be a great print magazine, but they are having trouble paying the bills, and have resorted to pushing useless junk on readers to keep the light on. They make a lot of many by pretending to subjectively discuss "which antiVirus is best for you" and not saying the obvious: the one that is built into MacOS.
All those Makers PAID to be included in the article on anti-Virus.