Welcome to Malvertising
Malvertising, or malicious advertising, is the use of online advertising (display ads) to distribute malware with little to no user interaction required. Instead of trying to trick people into visiting malicious sites or opening malicious email attachments, malvertising web ads are delivered through ad networks to popular websites.
Since Malvertising has been introduced, major sites have been impacted
including Yahoo!, MSN, NYTimes.com, bbc.com and AOL.