Malware authors are beginning to nibble at Google's text advertising money pie. According to a warning from antivirus vendor BitDefender, <A HREF="http://www.eweek.com/article2/0,1759,2237535,00.asp?kc=EWRSS03119TX1K0000594">a new Trojan is making the rounds, hijacking Google text advertisements</A> and replacing them with ads from a different provider.

The Trojan.Qhost.WU threat works by modifying the hijacked computer's Hosts file to redirect the initial query to the Google AdSense servers to a malicious host.