Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

    Glossary
A  |  B  |  C  |  D  |  E  |  F  |  G  |  H  |  I  |  J  |  K  |  L  |  M  |  N  |  O  |  P  |  Q  |  R  |  S  |  T  |  U  |  V  |  W  |  X  |  Y  |  Z

assurance case

Definitions:

  A reasoned, auditable artifact created that supports the contention that its top-level claim (or set of claims), is satisfied, including systematic argumentation and its underlying evidence and explicit assumptions that support the claim(s).
Sources:
NIST SP 800-160v1r1 from ISO/IEC 15026-1:2019

  A structured set of arguments and a body of evidence showing that an information system satisfies specific claims with respect to a given quality attribute.
Sources:
CNSSI 4009-2015 from NIST SP 800-39
NIST SP 800-137 under Assurance Case
NIST SP 800-39 under Assurance Case from Software Engineering Institute, Carnegie Mellon University

  A structured set of arguments and a body of evidence showing that a system satisfies specific claims with respect to a given quality attribute.
Sources:
NIST SP 800-53A Rev. 5 from SEI Arguing Security