Who is primarily responsible for ensuring security controls are implemented in an information system?

The Information System Owner is primarily responsible for ensuring that security controls are implemented in an information system. This role encompasses oversight of the entire information system, including the selection, implementation, and maintenance of security controls. The Information System Owner has the authority and accountability for the security of the system, ensuring that it meets regulatory requirements and organizational policies.

This individual understands the system's functions and the sensitivity of its data, which positions them to make informed decisions about the necessary security measures. They work closely with various stakeholders within the organization to coordinate the implementation of security controls that mitigate risks effectively.

While other roles, such as the Chief Technology Officer, Compliance Officer, and end-users, contribute to the overall security framework, their responsibilities are different. The Chief Technology Officer may focus on the technological aspects and infrastructure, the Compliance Officer ensures adherence to legal and regulatory requirements, and end-users are typically responsible for following established security protocols rather than implementing controls themselves. Thus, the Information System Owner is crucial in ensuring that security measures are actively and effectively put into place.