BAT/Newo is a worm designed to spread via e-mail in a message that refers to the soccer World Cup finals in South Korea and Japan. The subject field of the messages the worm sends out is "England Win WorldCup with Beckham". BAT/Newo carries out destructive actions on affected computers. In fact, it inserts its code in the Autoexec.bat, win.ini and system.ini files, hence making the operating system unstable. W32/Lentin.E is a worm that reaches systems in a file attached to an e-mail message. Its most dangerous feature is the fact that, like other worms such as Klez.I or Badtrans.B, W32/Lentin.E exploits a vulnerability in Microsoft Internet Explorer 5.01 and 5.5 to run simply when the e-mail message carrying it is viewed in the Outlook preview pane. W32/Lentin.E has also been programmed to end several processes on affected computers. VBS/Help.C is a virus that spreads by using a feature in Outlook Express that allows backgrounds to be included in messages. In fact, the virus hides within an HTM file that it sets as background of e-mail messages sent from the affected computer. VBS/Help.C also infects files with any of the following extensions: HTM, ASP, VBS, and HTT.