Called Sixem-A, the worm began circulating earlier this week, and has just recently been blocked by antivirus vendors. So far, the worm has been detected at only a handful of companies, but it is the first World Cup 2004 malware to target an English-speaking audience, said Graham Cluley, a senior technology consultant with Sophos PLC.

Worm lures victims with 'Naked World Cup' subject line