Thankfully, almost all browser based scams can be closed by simply opening Windows Task Manager and ending the browser process.
At this same time, for those who have never seen a message like this, it can be quite alarming as these scams make it difficult to close browser tabs or the browser itself. This is just a scam to try and scare you into purchasing a program so that the affiliate earns a commission. Once again, this is just a fake message and your computer is not infected, this is not a Windows security notification, and the site has no idea what is installed on your computer.
It is strongly advised that you get protected now. Get Mcafee Antivirus now and protect your computer from malware, viruses and online hackers.
Your Windows antivirus protection may not be sufficient enough.