There's been a mass scale injection ongoing recently, with the injected iframe poiting to willysy.com. Goolge indicates more than 90,000 infected pages. If you are running osCommerce, check your site!!
More infos below
http://blog.armorize.com/2011/07/willysycom-mass-injection-ongoing.html
More infos below
http://blog.armorize.com/2011/07/willysycom-mass-injection-ongoing.html