The security assessment and certification and accreditation policies and procedures are consistent with applicable laws, Executive Orders, directives, policies, regulations, standards, and guidance. The security assessment and certification and accreditation policies can be included as part of the general information security policy for the organization. Security assessment and certification and accreditation procedures can be developed for the security program in general, and for a particular information system, when required. The organization defines what constitutes a significant change to the information system to achieve consistent security reaccreditations. NIST Special Publication 800-53A provides guidance on security control assessments. NIST Special Publication 800-37 provides guidance on security certification and accreditation. NIST Special Publication 800-12 provides guidance on security policies and procedures.