Key risk indicators (KRIs) are metrics that measure the level of risk exposure and the likelihood of occurrence of potential adverse events that can affect the organization's objectives and performance. KRIs are used to monitor changes in the risk environment and to provide early warning signals for potential issues that may require management attention or intervention. KRIs are also used to communicate the risk status and trends to the relevant stakeholders and to support risk-based decision making12.
The primary reason to monitor KRIs related to information security is to alert on unacceptable risk.
Unacceptable risk is the level of risk that exceeds the organization's risk appetite, tolerance, or threshold, and that poses a significant threat to the organization's assets, operations, reputation, or compliance. Unacceptable risk can result from internal or external factors, such as cyberattacks, data breaches, system failures, human errors, fraud, natural disasters, or regulatory changes. Unacceptable risk can have severe consequences for the organization, such as financial losses, legal liabilities, operational disruptions, customer dissatisfaction, or reputational damage12.
By monitoring KRIs related to information security, the organization can identify and assess the sources, causes, and impacts of unacceptable risk, and take timely and appropriate actions to mitigate, transfer, avoid, or accept the risk. Monitoring KRIs can also help the organization to evaluate the effectiveness and efficiency of the existing information security controls, policies, and procedures, and to identify and implement any necessary improvements or enhancements. Monitoring KRIs can also help the organization to align its information security strategy and objectives with its business strategy and objectives, and to ensure compliance with the relevant laws, regulations, standards, and best practices12.
While monitoring KRIs related to information security can also serve other purposes, such as identifying residual risk, reassessing risk appetite, or benchmarking control performance, these are not the primary reason for monitoring KRIs. Residual risk is the level of risk that remains after applying the risk treatment options, and it should be within the organization's risk appetite, tolerance, or threshold. Reassessing risk appetite is the process of reviewing and adjusting the amount and type of risk that the organization is willing to take in pursuit of its objectives, and it should be done periodically or when there are significant changes in the internal or external environment. Benchmarking control performance is the process of comparing the organization's information security controls with those of other organizations or industry standards, and it should be done to identify and adopt the best practices or to demonstrate compliance12. References = Integrating KRIs and KPIs for Effective Technology Risk Management, The Power of KRIs in Enterprise Risk Management (ERM) - Metricstream, What Is a Key Risk Indicator? With Characteristics and Tips, KRI Framework for Operational Risk Management | Workiva, Key risk indicator - Wikipedia

The contribution of recovery point objective (RPO) to disaster recovery is to define backup strategy because it determines the maximum amount of data loss that is acceptable to an organization after a disruption, and guides the frequency and type of backups needed to restore the data to a usable format1. Minimize outage periods is not a contribution of RPO, but rather a contribution of recovery time objective (RTO), which defines the maximum amount of time that is acceptable to restore normal operations after a disruption2. Eliminate single points of failure is not a contribution of RPO, but rather a goal of high availability (HA), which ensures that systems or services are continuously operational and resilient3. Reduce mean time between failures (MTBF) is not a contribution of RPO, but rather a measure of reliability, which indicates the average time that a system or component operates without failure4. References: 1 https://www.
druva.com/glossary/what-is-a-recovery-point-objective-definition-and-related-faqs 2 https://www.druva.com
/glossary/what-is-a-recovery-time-objective-definition-and-related-faqs 3 https://www.fortinet.com/resources
/cyberglossary/high-availability 4 https://www.fortinet.com/resources/cyberglossary/mean-time-between- failures

Defining control requirements is the next step to ensure the security policy framework encompasses the new business model because it is a process of identifying and specifying the security measures and standards that are needed to protect the data and applications accessed by the BYOD devices. Defining control requirements helps to establish the baseline security level and expectations for the BYOD strategy, as well as to align them with the business objectives and risks. Therefore, defining control requirements is the correct answer.
References:
* https://www.digitalguardian.com/blog/ultimate-guide-byod-security-overcoming-challenges-creating- effective-policies-and-mitigating
* https://learn.microsoft.com/en-us/mem/intune/fundamentals/byod-technology-decisions

Replacing key controls with weaker compensating controls may introduce new vulnerabilities or increase the likelihood or impact of existing threats, thus raising the risk levels beyond the acceptable limits defined by the risk appetite and tolerance of the organization. This may expose the organization to unacceptable losses or damages, such as financial, reputational, legal, or operational. Therefore, the information security manager should be most concerned about the potential elevation of risk levels and ensure that the risk owner is aware of the consequences and accountable for the decision.
References = CISM Review Manual, 16th Edition, Chapter 2: Information Risk Management, Section: Risk Treatment, page 941.

The role of the information security manager in finalizing contract negotiations with service providers is to ensure that the outsourcing process is aligned with the organization's information security policies, standards, and objectives. One of the key aspects of this process is to perform a risk analysis on the outsourcing process, which involves identifying, assessing, and mitigating the potential threats and vulnerabilities that may arise from outsourcing activities. A risk analysis can help the information security manager to determine the appropriate level of security controls and requirements for the outsourced process, as well as to monitor and evaluate its performance and compliance. A risk analysis can also help to avoid or minimize legal, financial, reputational, or operational risks associated with outsourcing1. References =
* CISM Review Manual (Digital Version), Chapter 6: Information Security Program Management
* CISM Review Manual (Print Version), Chapter 6: Information Security Program Management