Bing and Yahoo use the same search engine. They allow ads at the top of searches and are not as good
at vetting those ads for malicious intent as Google is. So the malware criminals have moved away from Google
and placing their malware on Bing/ Yahoo search engines.
The result of Bing and Yahoo's negligence is seen regularly these days. As seen in this report: Bing and Yahoo Sponsored Results Lead to Hard-to-remove Rootkit
By Lucian Constantin
, IDG News
Oct 14, 2011 9:50 am
.......In the new attack observed by GFI Software, a sponsored result shown when searching for "Adobe Flash" linked to a page called "Download Flash Player" under the GetAdobeFlash.com domain.
However, according to Alex Eckelberry, vice president and general manager of the security software division at GFI, clicking on the link redirected users to a rogue page that was advertising Flash Player 10 but distributed a dangerous rootkit
"In this case, we're talking Sirefef (ZeroAccess aka Max++), probably the nastiest piece of malware circulating on the 'net right now," said Eckelberry. "Sirefef kills any attempt to remove it, and is nearly impossible to clean (short of booting onto a rescue disk and performing cleanup actions, or reformatting)," he added........
.........Google used to have similar problems, with cybercriminals regularly tricking its sales team into accepting rogue ads. However, the company is now much more vigilant and such attacks are extremely rare.
It's obvious that attackers have moved to Bing in search of new victims after Google became a difficult target.........