I saw this mentioned in an article a day or two after the attack.
Clearly they are wrong about this (lying or mistaken), for as you say the speed
of propogation means that a single infected host would have infected the whole
internet in minutes which means we all see the first packets at almost exactly
the same time.
From the context it is written below, this seems a cheap stunt to promote their
On Thu, 13 Feb 2003, Sean Donelan wrote:
Wow, Symantec is making an amazing claim. They were able to detect
the slammer worm "hours" before. Did anyone receive early alerts from
Symantec about the SQL slammer worm hours earlier? Academics have
estimated the worm spread world-wide, and reached its maximum scanning
rate in less than 10 minutes.
I assume Symantec has some data to back up their claim.
"For example, the DeepSight Threat Management System discovered the
Slammer worm hours before it began rapidly propagating. Symantec's
DeepSight Threat Management System then delivered timely alerts and
procedures, enabling administrators to protect against the attack
before their environment was compromised."