Bounds register

The address of a register, which is a small memory location directly on the CPU. When the CPU needs information from one of those registers to complete an operation, it can simply use the register address (for example, “register one”) to access the information.
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Process of controlling modifications to hardware, firmware, software, and documentation to ensure the information system is protected against improper modifications prior to, during, and after system implementation. The process of controlling modifications to the system’s hardware, firmware, software, and documentation that provides sufficient assurance that the system is protected against the introduction
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Management of security features and assurances through control of changes made to hardware, software, firmware, documentation, test, test fixtures, and test documentation throughout the life cycle of an information system. The process of logging, auditing, and monitoring activities related to security controls and security mechanisms over time. This data is then used to identify agents of change, whether objects, subjects, programs, communication pathways, or even the network itself. The use of procedures appropriate for controlling changes to a system’s hardware, software, or firmware structure to ensure that such changes will not lead to a weakness or fault in the system.
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Hardware, firmware, and software elements of a trusted computing base implementing the reference monitor concept. Security kernel must mediate all accesses, be protected from modification, and be verifiable as correct. The central part of a computer system (hardware, software, or firmware) that implements the fundamental security procedures for controlling access to system resources. The core set of operating system services that handles all user/application requests for access to system resources.
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Security controls (i. e. , safeguards or countermeasures) for an information system that are primarily implemented and executed by the information system through mechanisms contained in the hardware, software, or firmware components of the system. (NIST Special Pub 80053. )The security controls (i. e. , safeguards or countermeasures) for an information system that are primarily implemented and executed by the information system through mechanisms contained in the hardware, software, or firmware components of the system.
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