Yup, I'm pretty sure many software companies have done similar things. It's a bit easier on video game consoles where your software runs on the very same hardwa

Yup, I'm pretty sure many software companies have done similar things. It's a bit easier on video game consoles where your software runs on the very same hardware everywhere and you can pull off more subtle tricks. There were a few commercial games that also used a similar approach [1]. [1] https://dolphin-emu.org/blog/2017/02/01/dolphin-progress-report-january-2017/#50-2204-hack-to-protect-lower-mem1-from-malicious-game-code-by-booto https://dolphin-emu.org/blog/2017/02/01/dolphin-progress-rep...