https://www.wired.com/2003/07/slammer/
I know Slammer is a few years back now, and some of you are probably already aware of it, but can we all just take a moment to appreciate how beautiful it really was?
About half way down the page above is Slammer's simple code (starting at 'step one').
Slammer;
Fit inside 1 UDP package at less than 376 bytes.
DoS'd about 75,000 SQL Servers and affected millions of machines in less than 15 minutes.
Chose victims at random, at hundreds of IP attempts per second per machine, so no one was safe.
I don't think they ever even found out who did it? (citation needed)
I think I need some time alone with a box of tissues.