In 1988 his discovery of buffer overflow first brought the Internet to the attention of the general public.
Hmmm... well, that's one way of putting it...
BTW, it's interesting that while Graham is the front man for YC, the idea of launching thousands of like-minded enterprises and seeing which prevail (while knowing many will get caught, killed off, or die) is very similar to how worms spread across networks.
What can you tell if we do log in?