Fake Facebook email messages trick unsuspecting users into installing a trojan by pretending to be an account cancellation request from Facebook. Users who want to cancel their account can do so by visiting facebook.com/deactivate.php to deactivate their account. If they choose not to do so, the application will keep nagging until the user agrees to the applet being installed. The malware preys on the fact that many users value their Facebook account highly and do not want it to be deleted. The most commonly installed trojans are SpyEye-B and Agent-WHZ.”]