For Firefox users, you can use Firefox extension AdBlock and add the following lines to its filters to protect you from Facebook Malware:
UPDATE: There’s also AdBlock for Google Chrome Browser here!
||connect.facebook.net/ ||facebook.com/connect/ ||facebook.com/plugins/ ||facebook.com/ajax/connect/ ||facebook.com/connect.php/ ||api.facebook.com/restserver.php ##img[src$=”facebook_icon.png”] ||fbcd