What are fraudulent pop-up windows?
Pop-up windows are the small windows or ads that appear suddenly over or under the window you are currently viewing. The vast majority of these are legitimate ads and pose no threat. Fraudulent pop-up windows are a type of online fraud often used to obtain personal information. Pop-up windows are often the result of programs installed on your computer called “adware” or “spyware.” These programs monitor your web surfing activity and regularly come hidden inside many free downloads, such as music-sharing software or screen savers. Many of these programs enable harmless advertisements, but some contain “trojan horse” programs that can record your keystrokes (for account login) or relay other information to an unauthorised source.