Ensuring accountability for changes to the environment is the primary reason for implementing change management. Change management is a process that ensures that any changes to the system or network environment, such as the hardware, software, configuration, or documentation, are planned, approved, implemented, and documented in a controlled and consistent manner.
Change management can provide several benefits, such as:
Improving the security and reliability of the system or network environment by preventing or reducing the errors, conflicts, or disruptions that might occur due to the changes Enhancing the performance and efficiency of the system or network environment by optimizing the resources and functions Increasing the compliance and alignment of the system or network environment with the internal or external requirements and standards Facilitating the monitoring and improvement of the system or network environment by tracking and logging the changes and their outcomes Ensuring accountability for changes to the environment is the primary reason for implementing change management, because it can ensure that the changes are authorized, justified, and traceable, and that the parties involved in the changes are responsible and accountable for their actions and results. Accountability can also help to deter or detect any unauthorized or malicious changes that might compromise the system or network environment.

The most effective control to monitor the security of buried data lines inside the perimeter of a facility is to use ground sensors installed and reporting to a security event management (SEM) system. Ground sensors are devices that detect and measure the physical changes or disturbances in the ground, such as vibration, pressure, or sound, caused by any movement or activity near the buried data lines. Ground sensors can report the detected signals to a security event management system, which is a system that collects, analyzes, and correlates the security events and alerts from various sources, such as sensors, cameras, or logs. A security event management system can help to identify and respond to any unauthorized or malicious attempts to access, tamper, or damage the buried data lines, and to alert the security personnel or authorities.

Cross-certification is a major component of the federated identity management (FIM) implementation model and is used to establish a network between dozens of organizations.
Cross-certification allows two different organizations to establish mutual trust by exchanging and validating each other's digital certificates. This mutual trust enables users in one organization to access resources in another organization without the need for separate user accounts or authentication processes.

A function of Security Assertion Markup Language (SAML) is policy enforcement. SAML is an XML-based standard for exchanging authentication and authorization information between different entities, such as service providers and identity providers. SAML enables policy enforcement by allowing the service provider to specify the security requirements and conditions for accessing its resources, and allowing the identity provider to assert the identity and attributes of the user who requests access.

A Trusted Platform Module (TPM) is a hardware-based security feature that can be used to securely store cryptographic keys, such as the decryption key for full disk encryption (FDE). It provides a secure environment that is resistant to tampering and can bind the decryption key to the specific hardware of the device. This way, the decryption key is not stored in a way that can be easily extracted by an attacker, and the disk is tied to the particular device, ensuring that the data remains inaccessible if the device is moved to another machine.