This guy's pretty cool:
https://newsletter.mathewingram.com/a-75-cent-mistake-put-him-on-the-trail-of-a-german-hacker/

A 75-cent mistake put him on the trail of a German hacker
Though his vocation was astronomy, Clifford Stollโs knowledge of computer systems was what paid the bills when he took a job as a system administrator at the Lawrence Berkeley National Laboratory. It was a $0.75 discrepancy in one of the accounting logs at the lab, though, that set



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