At one place I worked, we had a printer that would die whenever the PCI-DSS auditors would run a network scan. There was a Windows vulnerability that came out

At one place I worked, we had a printer that would die whenever the PCI-DSS auditors would run a network scan. There was a Windows vulnerability that came out in 2010-2011ish, when I was working there, that I had to deal with. I ran an nmap scan of the entire network looking for the bug, and accidentally BSOD'd half the office...