This alert is a follow-up to a post made yesterday on our blog: http://www.websensesecuritylabs.com/blog/ Websense® Security Labs™ has discovered numerous websites exploiting an unpatched Windows vulnerability in the handling of .WMF image files. The websites which have been uncovered at this point are using the exploit to distribute Spyware applications and other Potentially Unwanted Soware. The user's desktop background is replaced with a message warning of a spyware infection and a "spyware cleaning" application is launched. This application prompts the user to enter credit card information in order to remove the detected spyware. The background image used and the "spyware...