Your system is heavily damaged by Four virus! are fake virus warning pop-ups that redirect Android users to bogus websites or promote fake security and optimization apps. Some Android users have been getting these fake virus warnings when visiting legitimate websites which usually means that there are problems with ad providers. However, if you keep getting Your system is heavily damaged by Four virus! and similar pop ups on pretty much every site you visit then your device could be infected with adware.
Here’s an example of the offensive pop-up ad:
Your system is heavily damaged by Four virus!
We detect that your [device] is 28.1% DAMAGED because of four harmful viruses from recent adult sites. Soon it will damage your phone’s SIM card and will corrupt your contacts, photos, data, applications, etc.
If you do not remove the virus now, it will cause severe damage to your phone. Here’s what you NEED to do (step by step);
Here’s a short list of URLs used by scammers:
Yours might be different, scammers change URLs quite often to avoid automated filters and website blockers.
The problem is that these days it is nigh on impossible to use the internet and stay 100% protected from everything that is lurking in the darkest recesses of the World Wide Web and waiting to do us harm. Virtually ALL of us use the internet on a daily basis. And now it is not only your desktop or laptop that is at risk: tablets and smartphones – with their round the clock connectivity are also placing you firmly in harm’s way. So no matter what device you are using to access the internet, one thing is certain and that is that you need to take your online safety seriously and protect yourself from the internet’s dangers including fake virus warnings and other intrusive ads.
If you got this “Your system is heavily damaged by Four virus!” pop-up once and you managed to close it then you are probably fine. But if you keep getting it constantly then there’s probably some app installed on your device which has to be removed. To do so, please go to the Application Manager in Settings, find your web browser and clear both cache and data. See if that gets rid of the pop-up ad. If it does you will also lose your history, bookmarks etc. but that’s the price you’ll have to pay. If the clear operation doesn’t work you may need to do a factory reset, but back up your important data first. If you have an Apple device, navigate to Settings/ tap Safari/ select Clear History, Cookies and Data. That should do the trick.