A computer or microchip securely controlled-through a private network and including a secure private unit that is protected by an inner hardware-based access barrier or firewall that denies access to the private unit from a network of computers including the Internet, an unprotected public unit including a network connection, a separate private network connection for the private network in the private unit, a general purpose microprocessor, core or processing unit in the public unit, a master controlling device for the computer or microchip in the private unit; and a secure control bus connecting the master controlling device with the microprocessor, core or processing unit and isolated from input from the network and components of the public unit. The master controlling device securely controls an operation executed by the microprocessor, core or processing unit through the private network to the additional private network connection via the secure control bus.