<A HREF="http://story.news.yahoo.com/news?tmpl=story&cid=1093&ncid=1093&e=1&u=/pcworld/20050222/tc_pcworld/119750">A new version of the Sober worm</A> wriggled out of its hole early on Monday and set about quickly attacking computers in Europe and the US. The worm is a mass-mailer, meaning it spreads itself via email using contacts listed in the address books of computers it infects. The first instance of the worm, called W32.Sober-K-mm, was intercepted by UK security company MessageLabs.