Professional licensing, tampering protection and software examination system. Both traditional methods: file compression, code fragment encryption, metamorphic loader, debugger protection and file tampering protection, and new innovative techniques: data protection with stolen resources technique, partial code execution on a virtual machine are used to protect executable files. Licensing functions can be automatically integrated into the protected program, which allows for linking them to the equipment and easy management of user licenses with license manager.It's ideal solution for software developers.