TIL that in 2003, when the Blaster computer worm was spreading, someone made another worm called Welchia that exploited the same Windows vulnerability. Welchia would delete the Blaster worm and then download Windows updates to close the vulnerability.
https://en.wikipedia.org/wiki/Welchia
#til #todayilearned
https://www.reddit.com/r/todayilearned/comments/1ifotrp/til_that_in_2003_when_the_blaster_computer_worm/