Security experts have discovered <A HREF="http://news.zdnet.com/2100-1009_22-5886484.html?tag=zdnn.alert">a malicious program</A> aimed at tricking users into clicking on phony search results on fake Google, Yahoo, and MSN sites. People with infected machines who try to visit those popular search sites are redirected to spoof versions, antivirus company Panda Software said. The spoof sites serve up bogus search results intended to generate traffic and revenue for other sites that are presumed to be in on the scheme.