And another assault is expected on computers in the United States. Victims receive an e-mail containing an attachment that seems to be a picture of the winsome Russian tennis player. If they double-click on the attachment, the virus sends itself to everyone in the victim's Microsoft Outlook address book. The virus is likely to hit U.S. home users hard today, since most major U.S. companies will have set up protection after Monday's attack, says Cluley. The virus doesn't destroy files, but it can clog up and shut down mail servers.
Experts there say OnTheFly is probably a Dutch teenager without much virus experience.
Construction kits are popular with unskilled kids who want to be seen as tough, Cluley said. All are Microsoft Word macro or VBS viruses. But there's no evidence connecting him with Zulu, the most famous Argentinian virus author, who wrote the widespread BubbleBoy virus. He hasn't released viruses. What's most frustrating about this virus, experts said, is that it's easily curable.