Posted by SecExtra on February 11th, 2010

Pop-ups have always been a nuisance for computer users, but the FBI is warning consumers that they can be much more than irritating today. There is an ongoing threat involving pop-up security messages that have been spreading across the internet that the FBI is attempting to bring awareness to the public.

The messages have been known to contain a virus that can harm your computer, cause costly repairs, and even lead to identity theft. The viruses being spread contain scareware, which is fake anti-virus software that looks authentic.

While it can be difficult to identify viruses, keep an eye out for messages that display anything that looks like a real-time, anti-virus scan of your hard drive. The scareware will display a list of reputable software icons, but the difference is you will not be able to click a link to go to the real site.

As soon as the pop-up warning displays on your screen, it is extremely difficult to get rid of. If you click the pop-up to purchase the software, a form will appear asking for payment information. Unfortunately, the scareware can install malicious codes onto your computer regardless of whether or not you click on the warning.

Obviously, the smart thing is to avoid downloading the software. But if you do fall for it, the software could result in viruses, malicious Trojans, and potentially keyloggers. Keyloggers is hardware that records passwords and sensitive data. The FBI says scareware has already cost victims more than $150 million.

Keep an eye out for pop-up warnings that are a variation of recognized security software as this is what cyber criminals often use. If you happen to receive any anti-virus pop-ups, close the browser and shut down your computer. The more cautious you are the better.