Yahoo offline because of attack (was: Yahoo network outage)

[Declan McCullagh]

Yahoo told me on the phone that it's a malicious attack, and Global Center 
says the same thing. In Yahoo's words: "a coordinated distributed denial of 
service attack."

We've got a brief story up at:
  http://www.wired.com/news/business/0,1367,34178,00.html

The problem apparently originated with a router. But what kind of attack 
could have taken the network offline for that period of time and not 
affected other Global Center customers? I mean, there had to have been a 
gaping security hole somewhere: It looks like the routes got lost for 
(nearly) all of the Yahoo network, but no other non-Yahoo sites...

-Declan