In high school, we had laptops provided by the school and imaged by the IT department, who had logged into them. All we had to do was use a tool to recover the

In high school, we had laptops provided by the school and imaged by the IT department, who had logged into them. All we had to do was use a tool to recover the Windows password (yeah I know, skiddie, etc.) and we could login as IT admins on any computer on the domain. Was pretty innocent about the whole thing, changed a few backgrounds remotely, and sent messages and shutdown people's computers in class remotely. Unfortunately I changed a default Windows background image, which meant it showed up something unsavoury for everyone who logged in, and got caught, copped detention and a many, many page letter about how I shouldn't do it.