How about they create a virus that copies itself onto USB drives? Getting that virus out there doesn't sound that hard, just creare some crap game.exe and put it on itch.io for free. All it takes is for a kid to borrow nuclear-engineer-dad's USB drive and plug it in their infected PC.

I'm not a fan of using AI, it doesn't amplify the work I do that much, but I'm terrified by what is already possible today.