What I Did
When I was in the US Marine Corps I worked in a secure location and I did not have much access to the main frame, although I did have a top secret security clearance.
One day I blocked my system and called for tech support. These people did not have a top secret security clearance, so I had one log in as a superuser and then step away from the computer and give me the steps to resolve my problem. At the same time I gave myself the same rights as the mainframe administrator.
I finished, and let her log out. Then I created a second account for myself.
That evening when the secure facility was closed I drifted all through the mainframe and found a lot of classified information, which I removed (after printing the lead page for proof) I worked 14 hours non-stop.
9h00 the security officer comes to work and I asked for an appointment, he refused. So I went to his office and interrupted his meeting and handed him his own stack of classified info that locals had access to, as an admin. His meeting ended and ALL of my management was called in. Until they were all present I was yelled at. Once they were all present I gave the complete file to my boss to show what I had done.
From being yelled at and threats of posting in Afghanistan (when the Russians were still there) to an award and recommendation for promotion.
Security officer called the main frame admin folks and had them remove my privileges, to make me harmless again.
I went back to work as normal and then a month or 6 weeks later I went to our facility late Friday evening and didn't leave until Monday morning. They removed my privileges, but no one knew I made a second account, which I used to give myself my privileges back. This time I brought my boss to the Security Officer to hand over the classified information - yelling annoys me.
Same process of yelling and removing privileges.
Only after I did it the third time did someone think to ask how I kept getting access. Marines are taught to never lie to a superior officer, so I told them. Lost all access after that.
Long story, but the kid in question was doing what was right. Hacking to find a weakness is a profession these days.