Downadup Worm Races Onto Millions of PCs

The Downadup worm, also known as Conficker or Kido, is racing across the Internet and has infected more than 8.9 million PCs since November. Microsoft has issued a patch to block the worm, but many PC users haven’t installed it and portable USB drives are helping the worm spread. The Downadup worm also blocks security sites and changes access rights