Popups appear when I move the cursor some text on websites, which has never happened before. These ads claim to be powered by coupondropdown. I'm not sure if these ads are malicious untile I read this page showing the hazards of coupondropdown. Well, the pop-ups I'm suffering are triggered by malware. So I want to know F-secure online scanner can help me solve this problem? You may think the problem is redundant, but I just want my PC to avoid more danger. After all, I'm about to download the sanner.