Backdoor Virus pop-up issue
iMac (21.5-inch, Late 2015), iOS 10.3.3
iMac (21.5-inch, Late 2015), iOS 10.3.3
A web browser has no way of knowing if you do, or don’t, have a virus installed. Since there are no Mac viruses in the wild, it’s safe to say you do not have a virus.
This is a scam. Don’t click on any links or call any phone numbers. Quit your browser, clear it’s history and web data, and don’t visits sites that generate such scams.
Avoid phishing emails, fake 'virus' alerts, phony support calls, and other scams - Apple Support
It is a scam. If you use Safari as your browser please go to Safari - Preferences - Extensions and add AdBlock and the popups will disappear.
howw od i clear web data
Backdoor Virus pop-up issue