Computer readable medium on which is stored a program for preventing the unauthorized use of program data

摘要

A storage medium stores a program of instructions executable by a computer to perform a function for preventing unauthorized use of program data. The function has a process of judging whether or not a storage area of the program data is writable and a process of executing an unauthorized use prevention process to prevent an unauthorized use of the program data stored in the storage area when the storage area of the program data is writable.