That's a lot more badass than my IT confession.
In high school, me and my friends were labeled as "cyberterrorists" by the school's principal for what we did. We were pretty much infamous for it, which says something about the pedestrian nature of my high school. Anyway, we installed a virtual network controller on each of the computers in the library, which runs invisible in the background but lets us take control of any computer at any time. The real beauty of it though? We could control the computers from our iPod Touches.
One afternoon, in precalc, towards the end of a period I got on and there was somebody typing a paper at the library computer. I started finishing her sentences for her. She would pause for a moment, backspace over it, and start typing again.
After a few repetitions, she typed into a new line, "Who is this?"
To which I naturally typed back, "SATAN."
She said, "haha reallll funny"
To which I replied, "It won't be so funny when you're burning in hell, bitch!" and turned her computer off.
What I didn't know at the time was that the girl suffered from a mental illness, so she didn't get that it was a joke. Instead, she went to the principal and told him someone threatened to burn the school down.
A Pittsburgh cyber crime unit got called. One kid got caught, and he ratted out the rest of us. I got three days out-of-school suspension for that little prank.
The most ironic part? I now work at my school's IT helpdesk in college part-time.