TIL there was a computer worm that would gain access to Windows XP systems, download a patch from Microsoft to close the vulnerability that it used to infect the system, attempt to delete the infamous Blaster worm (if present) from the system, then delete itself.

http://en.wikipedia.org/w/index.php?title=Welchia



Submitted February 14, 2015 at 03:05AM by garglemymarbles http://www.reddit.com/r/todayilearned/comments/2vt4h1/til_there_was_a_computer_worm_that_would_gain/