Lots of people pointed to the online Wired story Slammed!, but I found the detailed Analysis of the Sapphire Worm to be more helpful for understanding the details. Plus, this report came out on February 4th (the worm attack itself started on January 25). The Wired story is in their July issue.
It seems that Ethernet turned 30 in May (I missed it). The Internet Society has a good detailed story.