Me - a graduate student in a university. Looking around on all servers on the network and found a program called "crack". it was designed to reverse-engineer passwords given a unix passwd file. I thought, what the heck, let me see if I can get some gems. SO I used yppasswd to download all password hashes, and ran crack on it. Needless to say, sysadmin found out in a couple of days, and suspended my account for 2 weeks :(