Our IT dept sent us this message today:
Rogue Antivirus Warnings
Please be alert for any rogue antivirus warnings that may pop-up on your screen, generally whilst on the internet. A popular one at the moment is Antivirus 2010 that will appear on your screen, advising you that you have a number of viruses/trojans installed on your machine and to click "Remove" to rectify.
Clicking "remove" will actually install malware on your machine. It may look something like this:
Bookmarks