We had winVNC for remote monitoring on our school desktop computers in high school, and within five minutes of beginning my programming class, I had written and utilized a brute-force utility and recovered the password. I handed slips of paper with the passowrd on it to two people, and within the hour, the whole school knew about the system and some of the smarter ones were misuising it. One wek later, we arrived at school to find that VNC had mysteriously disappeared from every computer on the network. It was fun to abuse while it lasted.
The best part was that every network admin knew that I had done it, but they couldn't do a damn thing about it without any proof.
I was also the mystery man who remotely accessed the faculty printer (1000+ pages per minute) to make a few hundred copies of step-by-step illustrated intsructions for bypassing the internet filter by using the board of ed proxy server instead of the HS server as the gateway. Again, I was dangerously close to being caught, but there was no proof that I had done it since the only identifying mark was a few lines of lyrics from a particular Nine Inch Nails song (anyone want to guess which song it was?
) I was smart enough not to say a word, and the people who I wanted to know figured it out.