$10 Quake shareware CD locked copies of all id Software games behind a flawed encryption scheme — pay-over-the-phone system only held up for 39 days after 1996

And that’s exactly what the GNOMON hackers did in a little over a month. The hacking group did not reveal how it built the cracker, and the inner workings of the crack were only revealed in 2018 through reverse-engineeri…