Yet another Internet worm, although this one is among a few that are starting to grow that use Instant Messengers to propogate themselves. The IM.GiftCom.All worm, dubbed the “Santa” worm, is targeting users of MSN and YIM, and trying to lure them into opening a file that will, of course, infect the machine and further propogate itself. It is also installing a rootkit on the machine, potentially opening up the machine to the outside world to be manipulated by the authors. To those on messengers, be wary of what you click on and of course make sure you keep your machine up to date.