Why do we care if a hacker went in and changed our script files? If they did, and the game doesnt work anymore, all the better. If they want to mess around, their computer deserves to crash very hard. They go messing around, change something around so, for instance, a mov destination is now 0x23, instead of variable "x", go ahead and delete the entire script (or others, for that matter). Its the least they deserve. Throw something in the registry that says "I TRIED TO MODIFY ''s SCRIPTS. NOW I CANT PLAY!! WAAAAAAAA WAAAAAAA!!!". Think up fun stuff.

if(scriptModified) RebootWindows;

Z.