Advertising used to promote products and services alone, but not now, when there is malvertising that enable advertisers to include malware on their ads, and now this is a question for many, especially after a malicious ad was published on Yahoo. Blue Coat Systems researchers discovered a group of websites that included malvertising payloads using brand websites, including the Los Angeles Times and Salon.com. To learn more about this story, check out the source.
Source: Computer World