No clue how they're gonna do it but I have done this for rom hacks before. I just put a number in the rom I can check if my stuff ever got leaked. Like 0 would be this person, 1 for the next. Thankfully I never gotten a leak before lol.
Everdrives supported the msu-1 for ages so you're probably able to play the msu-1 hacks just fine on real hardware and no one is gonna make a CD drive for the SNES in current year that would suck compared to the super fast loading of a cartridge...
It's not the movies or games downloads that I would worry about, like breaking into networks, downloading encrypted things, spying on network traffic. I have seen so many "Top Secret" seals on files when I was a kid
I was obsessed with finding UFOs, a surprising amount of US files where stashed on computers in other countries, China back in the early 90s omg sooo much