Pcdefencerequired.com Attempts to Scare with Fake Warnings
Pcdefencerequired dot com is a rogue website, set up with the intention to mislead and scare visitors.
When a visitor lands on Pcdefencerequired dot com, most likely after clicking a rogue ad on a different page, they are immediately faced with the image of a warning box, alerting them that their PC "might be infected with potential critical viruses".
This is all a sham. The website cannot know what is on your PC. To make matters worse, Pcdefencerequired dot com abuses branding, names and logo imagery of legitimate antivirus products, to lend an air of legitimacy to its misleading content.
Together with those fake virus warnings, the browser displays its default "allow notifications" dialog, in the hopes that the user will quickly click "allow" to receive more information about the fake viruses.
This will only lead to Pcdefencerequired dot com pushing intrusive and potentially harmful apps into your browser. Ads displayed by similar misleading pages are commonly sourced from rogue ad networks and can expose the user to additional malicious content, potentially unwanted programs, or other untrustworthy sites.
Remember never to trust similar virus alerts you see online and to navigate away from this type of misleading page, or simply close the browser entirely, to stay safe.