In one embodiment, the invention is a method and apparatus for secure and reliable computing. One embodiment of an end-to-end security system for protecting a computing system includes a processor interface coupled to at least one of an application processor and an accelerator of the computing system, for receiving requests from the at least one of the application processor and the accelerator, a security processor integrating at least one embedded storage unit and connected to the processor interface with a tightly coupled memory unit for performing at least one of: authenticating, managing, monitoring, and processing the requests, and a data interface for communicating with a display, a network, and at least one embedded storage unit for securely holding at least one of data and programs used by the at least one of the application processor and the accelerator.