The FBI warned consumers today about an ongoing threat involving pop-up security messages that appear while they are on the Internet. The messages may contain a virus that could harm your computer, cause costly repairs or, even worse, lead to identity theft. The messages contain scareware, fake or rogue anti-virus software that looks authentic. The message may display what appears to be a real-time, anti-virus scan of your hard drive. The scareware will show a list of reputable software icons; however, you can’t click a link to go to the real site to review or see recommendations. Cyber criminals use botnets—collections of compromised computers—to push the software, and advertisements on websites deliver it. This is known as malicious advertising or “malvertising.”