It appears that the Slammer worm has caused so many problems in Korea, the world's most wired country, that all Internet activity in that country was effectively ground to a halt. The implications of this are staggering. The opportunity for terrorists to use some type of worm to crush the Internet in certain countries and cause all kinds of financial mayhem are clear. For the moment, it appears that Korea have targetted Microsoft as the responsible parties in this case. However, IMHO, the patch for this vulnerability was made available by Microsoft before these attacks, and as such its a failure of effected parties to keep up to date with security fixes that has caused these problems. What do you think? Post comments here. More on this story here, and here.