I was recently visiting my parents when I got the dreaded question: I think my Mac has a virus but I thought Macs didn’t get viruses? They were obviously a little concerned and somewhat embarrassed that they could have allowed something to happen to their Mac.
First off: yes, your Mac can get a virus, though it is still somewhat rare. After all, there are far fewer viruses in the wild to attack macOS than Windows, and way more PCs than Macs in the world. But there are Mac attacks in the wild and many of them originate within a web browser.
There are plenty of ways to scan your Mac for viruses and protect it from incoming attacks. Apple even has its own built-in antivirus tech called XProtect that constantly scans for known malware. But even with all that protection, things can get through.
Read more at Macworld.com