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ongoing assessment and authorization

Abbreviations / Acronyms / Synonyms:

OA

Definitions:

  Maintaining ongoing awareness of information security, vulnerabilities, and threats to support organizational risk management decisions. Note: The terms “continuous” and “ongoing” in this context mean that security controls and organizational risks are assessed and analyzed at a frequency sufficient to support risk-based security decisions to adequately protect organization information. See organizational information security continuous monitoring and automated security monitoring.
Sources:
CNSSI 4009-2015 under information security continuous monitoring (ISCM) from NIST SP 800-137

  See information security continuous monitoring (ISCM).
Sources:
CNSSI 4009-2015
CNSSI 4009-2015 under ongoing authorization

  The continuous evaluation of the effectiveness of security control or privacy control implementation; with respect to security controls, a subset of Information Security Continuous Monitoring (ISCM) activities.
Sources:
NIST SP 800-53A Rev. 5 under Ongoing Assessment

  The continuous evaluation of the effectiveness of security control implementation; it is not separate from ISCM but in fact is a subset of ISCM activities.
Sources:
NISTIR 8011 Vol. 1 under Ongoing Assessment