Usually resulting in a Windows computer being powned before patches could even be applied: https://it.slashdot.org/story/04/08/17/1347214/survival-time...

Note: The graph url is dead.

Yes, I remember this well.

I put an unpatched Windows 2000 machine on the network, and the system logs were littered with intrusion attempts—more than 500—after being online for a few minutes.