Email users are being warned about a new worm called W32/Sober-N.

It creates emails supposedly from the governing body of the soccer world, FIFA. The emails offer free tickets to the 2006 World Cup in Germany.

Like most other virus emails, it tries to get the recepient to open the attachment, thus attacking the users system and spreading the virus through mass email to other addresses on the user's computer.

The virus has been compressed which makes it very difficult for virus software programs to pick up.