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Re:Ask HN: What's the most black hat hack you did as a young... by ja27 on Thursday July 31, 2014 @04:20PM (#8116743)
~1985 on a 12-user TRS-80 Model 16 running XENIX:

    cat > /dev/ttyNN
and drive other students nuts with seemingly random stuff appearing on their screen.

I don't remember even knowing there was a root account or /etc/passwd then and I was too busy trying to learn enough vi to get my COBOL programs done. The things we endured to get to take "the computer class" at school.

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