In the organizational structure of a security function, the core activities typically include:

Managerial: Oversight, policy development, leadership.

Administrative: Recordkeeping, personnel management, compliance.

Preventive: Strategies and operations to deter incidents before they occur.

Investigative: Reactive efforts to determine the cause of incidents or breaches.

These functions vary depending on the organization and risk profile but represent the foundational elements of an effective security program.