Microsoft fights "malvertising"

http://microsoftontheissues.com/cs/blogs/mscorp/archive/2009/09/17/bad-ad-going-after-the-malvertising-threat.aspx

Have you ever opened a webpage only to see flashing banners all over the place offering you a free virus scan? Or that the virus has allready been found and you have to buy a certain software to get rid of it? Many users who are not familiar enough with the internet are possible victims of these dirty tricks.

This kind of advertising is called malvertising (compare to malware) and can be potentially dangerous and causes economical losses not just to users but also to Microsoft as well. Therefore Microsoft decided to step in and put end to this malvertising.