some final thoughts on black worm
no big stories - thanks to the cleaning up by the antivirusfirms and the Internet Storm Center and all the media attention
also, the data on the machines was only destroyed if the machine booted on friday, which it didn't always do (some networks like the Italian municipality of Milan) left the computers out on friday or just asked nobody to reboot that day
from the more or less half a million infections about 250 to 500 computers worldwide have lost data
next week for valentine, Microsoft brings an update of its antimalware tool with a protectionid against blackworm, so normally you should be safe in the future because this worm re-activates itself every third friday of every month.
source blog from f-secure