“Yahoo Messenger is not installed on your machine” popup Threat Level:

“Yahoo Messenger is not installed on your machine” popup is a sign you’re infected with an instant message worm. This “Yahoo Messenger is not installed on your machine” popup reads:

“Search result: Yahoo Messenger is not installed on your machine
Going to install it”

If you get this “Yahoo Messenger is not installed on your machine” popup, that means you have an instant message worm. This “Yahoo Messenger is not installed on your machine” popup shows up when an instant message worm searches your computer for Yahoo! Messenger. If you don’t have Yahoo! Messenger you’ll see this “Yahoo Messenger is not installed on your machine” popup. Then, the worm will install Yahoo! Messenger and send out IMs to other users, to try to spread itself.

Let me show you how to get rid of the worm behind this “Yahoo Messenger is not installed on your machine” popup.

Keep reading »