A new attack aimed at computers infected with the Bagle virus threatens to <A HREF="http://www.eweek.com/article2/0,1895,1950098,00.asp?kc=ewnws041806dtx1k0000599">generate scads of spam email campaigns,</A> and anti-malware experts concede that the threat remains a major headache. Researchers at anti-virus specialist F-Secure, based in Helsinki, Finland, described the attack, dubbed "SpamTool.Win32.Bagle.g," and said it involves a new set of URLs being sent to machines infected with Bagle.