The business process owner is the stakeholder who is responsible for the business process that is supported by the IT system, such as the CRM system. The business process owner has the authority and accountability to manage the risk and its response associated with the business process and the IT system. The business process owner should own the risk of customer data leakage caused by insufficient IT security controls for the new system, as it directly affects the performance, functionality, and compliance of the business process. The other options are not the correct answer, as they involve different roles or responsibilities in the risk management process:

The chief information security officer is the senior executive who oversees the enterprise-wide information security program, and provides guidance and direction to the information security managers and practitioners. The chief information security officer may advise or support the business process owner in managing the risk of customer data leakage, but does not own the risk.

The chief risk officer is the senior executive who oversees the enterprise-wide risk management program, and provides guidance and direction to the risk managers and practitioners. The chief risk officer may advise or support the business process owner in managing the risk of customer data leakage, but does not own the risk.

The IT controls manager is the person who designs, implements, and monitors the IT controls that mitigate the IT risks, such as the IT security controls for the new system. The IT controls manager may advise or support the business process owner in managing the risk of customer data leakage, but does not own the risk. References = Risk and Information Systems Control Study Manual, 7th Edition, Chapter 3, Section 3.1.1.1, pp. 95-96.