U.S. flag   An official website of the United States government
Dot gov

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

Https

Secure .gov websites use HTTPS
A lock (Dot gov) 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

Glossary terms and definitions last updated: May 17, 2022

This Glossary consists of terms and definitions extracted verbatim from NIST's cybersecurity- and privacy-related Federal Information Processing Standards (FIPS), NIST Special Publications (SPs), and NIST Internal/Interagency Reports (IRs), as well as from Committee on National Security Systems (CNSS) Instruction CNSSI-4009. Only terms that are defined in final publications—not drafts—are included here.

  • Multiple definitions. Some terms have multiple definitions. Terminology changes over time, and may differ based on the topic being addressed. Always refer to the source publication for the authoritative term and definition, and to see that information in its proper context.
  • Inclusive language. We recognize that some NIST publications contain potentially biased terminology. As we revise publications, we are reviewing and editing that language based on NIST’s inclusive language guidance. New publications in development will also follow that guidance.

The Glossary may be expanded to include relevant terms in external or supplemental sources, such as applicable laws and regulations. Recommendations for publications to be considered by NIST can be sent to secglossary@nist.gov. HOWEVER, terms without a source publication will not be independently added to this Glossary.

See NISTIR 7298 Rev. 3 for additional details about this 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
Showing 487 matching records.
M&S
M2M
MA
MAB
MAC
MAG
MAL
MAM
MAN
MAO
MB
MBR
MCI
MCU
MCV
MD
MD5
MDA
MDM
MDR
MDS
MDT
MDU
ME
MEA
MEC
MED
MEE
MEF
MEP
MES
MF
MFA
MFG
MFT
MGC
MGF
MHz
Mi
MI
MIA
MIB
MiB
MIC
mil
MIP
MKA
ML
MLE
MLS
mm
MMC
MME
MMO
MMS
MMT
Mn*
MNO
MO
MOA
MOD
MOE
MOP
MOS
MOU
MP
MPC
MQV
MRI
MRT
Ms
MS
MSA
MSB
MSC
MSK
MSL
MSO
MSS
MTA
MTC
MTD
MTI
MTP
MTU
MUA
MUD
mW
MWR
MX

* "Relevance" merely indicates the search engine's score for a document. It is based on the search parameters and information in the document's detailed record.