The primary purpose for continuous monitoring of security controls is to ensure the effectiveness of controls. This involves regularly assessing the controls to ensure that they are meeting their intended objectives, and that any potential weaknesses are identified and addressed. Continuous monitoring also helps to ensure that control gaps are minimized, and that systems are available and aligned with compliance requirements.

The greatest value provided by a Security Information and Event Management (SIEM) system is facilitating the monitoring of risk occurrences. SIEM systems collect, analyze and alert on security-related data from various sources such as firewall logs, intrusion detection/prevention systems, and system logs. This allows organizations to identify security threats in real-time and respond quickly, helping to mitigate potential harm to their systems and data.

A risk owner is a person or entity that is responsible for ensuring that risk is managed effectively. One of the primary responsibilities of a risk owner is to implement controls that will help mitigate or manage the risk. While risk assessments, determining the organization's risk appetite, and monitoring control effectiveness are all important aspects of managing risk, it is the responsibility of the risk owner to take the necessary actions to manage the risk.