Not really the same, but I had fun back in high school. Finding the Novell messaging utility that let me send a message to (IIRC) anyone in the school board cur

Not really the same, but I had fun back in high school. Finding the Novell messaging utility that let me send a message to (IIRC) anyone in the school board currently logged in, though not anonymously. Using some a couple lines of VBScript to change a couple registry entries (computers didn't persist storage anyways) you could also give your local admin privileges, to install stuff. That one got me in a touch of trouble, and I lost my account for a couple weeks while they "looked at my files", because I stored it on my network drive folder.