Lots of warnings doing the rounds about a new worm — called, variously, W32/Blaster-A Lovsan, MSBlaster or Poza — which is designed to hijack computers which are then programmed to automatically launch a denial-of-service attack on the website “windowsupdate.com”, from Saturday, August 16 onwards. Ironically, this website, operated by Microsoft, is used to deliver software patches to Microsoft customers.The Blaster worm does not spread via email, but does distribute itself via the internet looking for vulnerable computers that have not been patched against a security hole first reported by Microsoft in mid-July. Advice: make sure you have the latest Windows patches installed, and have your virus library up to date.