This involved the time sharing systems of a school district where I was employed. The time sharing system of the time had a "chief executive account" which had the ability to create new signons, library size, and other maintenance and supervisory functions that regular users were not allowed to do. The kids involved were caught and punished; but there was no news reports nor court records as it was handled internally.
Also, kids would find the logon of commercial accounts and use them to access other time sharing systems and snoop around libraries. The kids were curious about working with advanced functions other time sharing systems might offer.
A year or so later the school district got an HP-2000 machine for BASIC timesharing which was supposedly hacker proof since chief executive functions were performed only by the computer's console, not by any account. However, the kids discovered a glitch in the software in which they could cause the computer to crash and shut down, and crashed it from time to time. The school district was not amused because service was disrupted. The kids were caught and punished, but again it was handled internally.
I guess by today's standards it all doesn't seem like very much, but back then it was a big deal.