If they want a net book no one is going to "Hack" then get a crap one from the early 90s or late 80s with DOS on it that has a driver for a network card. When is the last time anyone saw an exploit for DOS? And the fact that it's single tasking, build an app that always runs (Single user, Single Tasking) so nothing else CAN run. No one would want to "Hack" that... Or use it for that Matter. Well except me, I'd put DooM and Quake on it and call it a day.