Virus writers taint Google Ad links
Virus writers have been gaming Google's "sponsored links" -- the paid ads shown alongside search engine results. They are aiming to get their malicious software installed on computers whose users click onto ad links after searching for legitimate sites such as BBBonline.org, the official Web site of the Better Business Bureau.
Sponsored links allow customers to buy advertisements attached to a particular search term. When a Google user enters a term into the firm's search engine, the ad belonging to the advertiser that bid the highest price for that search term appears at the top of the list of search results.
At the Washington Post.
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