My very first “school computer incident” was so innocent by comparison for most people.
I was maybe 11 and I was learning about batch files and I made one named win.bat that printed “hello”. Well I’m sure most folks know what happened next time the computer rebooted …hello hello hello hello hello…and the computer teacher said I had installed a virus and tried to kick me out of school. Luckily I was only expelled from computer class for the rest of the year.