In a security policy, what aspect addresses who is responsible for security measures?

The aspect of a security policy that addresses who is responsible for security measures is Responsibility. This element is crucial because it defines the roles and obligations of individuals or teams in implementing and maintaining security practices. Clarifying responsibility ensures that everyone involved understands their specific duties concerning security, which aids in accountability and reinforces a culture of security within the organization. By having designated responsibilities, organizations can also ensure that there are no gaps in security oversight, leading to more effective risk management and incident response.

In contrast, the other aspects listed address different components of a security policy. Evolution refers to the ongoing development and adaptation of security policies in response to changing threats, technologies, and organizational requirements. Enforcement pertains to the methods and processes used to ensure compliance with the security policies. Exception Management deals with how exceptions to the established security policies are handled, including the approval process and documentation required for such exceptions. Each of these elements plays a vital role in the overall effectiveness of a security policy, but they do not specifically designate responsibility for security measures.