I've been doing some reading about the recent Slammer worm / Sapphire worm attack, and I'm finding some good info out there. This worm now looks like the fastest spreading attack ever. Depending on your responsibility for servers, there's much to take precautions over.
Analysis [momo.lcs.mit.edu] - from MIT.edu
White Paper [caida.org] - includes many good links
GIF animation [caida.org] - the first minute of the worm's spread
