A system and method for protecting against the unauthorized use of operating system level commands is disclosed. The system includes a computer module including: a processor configured for performing data operations; a memory unit configured to store instructions executable by the processor; and an operating system module for supporting basic functions of the computer module, such as scheduling tasks, executing applications, and controlling peripherals. A virtual keyboard is connected to the computer module for creating one or more events or sequences of events recognizable by the operating system module. A system level command filter module is provided for filtering system level commands from the one or more recognizable events or sequences of events.