A procedure provides step-by-step instructions on how to complete a specific security task, ensuring consistency and accuracy. Unlike policies, which define high-level security expectations, procedures are detailed and operational. For example, a password reset procedure would outline the exact steps IT support must follow when assisting users.
Policy: Defines security objectives and rules (e.g., "All passwords must be complex").
Standard: Specifies required technologies or configurations.
Guideline: Provides recommendations but is not mandatory.
Procedure: Gives exact instructions to perform tasks.
Reference:
CompTIA Security+ SY0-701 Official Study Guide, Security Program Management and Oversight domain.