You acted like you owned the place. In legal terms, John, the computer system that you violated is nothing more than an electronic version of my newspaper office. Anyone can walk into the lobby here, but we don't let visitors into the offices without a pass. In order to get that pass, they have to provide their names. Likewise, the system you called lets anyone dial into the computer.
Honest callers give their real names and real phone numbers.
You gave a fake name. And I knew you were a thief when the log showed me how you snuck through the private storage areas on my computer's disk drive, reading file after file. In the second letter you wrote to me, you tried to excuse your behavior by saying you didn't steal anything. The original files are still in my computer, so you couldn't have stolen anything. What wonderful logic, John.