Digital epidemiology!

"If he told his worm not to infect machines already infected, his colleagues could simply feign infections to immunize systems. Instead, he gave it a 1-in-7 chance of reinfecting systems that said they were already infected..."

https://www.pcgamer.com/remembering-the-morris-worm-the-first-internet-felony/

#tech #worms #DigitalEpidemiology