Does anyone know of any resources that describes some techniques for improving security on the client side of an application? I do not expect to make anything completely "hack-proof", as I understand that's a completely futile exercise - I merely want to give people a bit of a hard time trying to mess with the program contents, to dissuade less motivated crackers and to keep the more experienced ones [if they ever come close to the app] busy for a while.
This is native code.