Developing, Implementing, and Monitoring Metrics for Security Activities

C.

Among the given options, the stakeholder who should be primarily responsible for developing, implementing, and monitoring metrics for security activities is the Chief Information Security Officer (CISO).

The CISO is responsible for the overall security posture of an organization and is tasked with ensuring that the organization's information and systems are secure. Developing, implementing, and monitoring metrics for security activities is a critical component of achieving this goal.

Metrics are quantitative measures that are used to evaluate the effectiveness of security controls and the overall security program. By measuring security activities, organizations can identify gaps and areas for improvement, make informed decisions about security investments, and demonstrate the effectiveness of their security program to stakeholders.

The CISO is the stakeholder who has the knowledge, expertise, and authority to lead the development, implementation, and monitoring of security metrics. They work closely with other stakeholders such as the Chief Technology Officer (CTO) and IT Steering Committee to ensure that the security metrics align with the organization's strategic goals and objectives.

The CTO is responsible for the overall technology strategy of the organization and may be involved in the implementation of security controls, but they may not have the expertise in security metrics development and monitoring. Similarly, the Security Incident Response Team (SIRT) may be responsible for responding to security incidents, but they may not have the broad view of the organization's security program required to develop and monitor security metrics. The IT Steering Committee may provide oversight of the security program, but may not have the necessary expertise in security metrics.

Therefore, the CISO is the stakeholder who should be primarily responsible for developing, implementing, and monitoring metrics for security activities.