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: March 28, 2023

This Glossary only consists of terms and definitions extracted verbatim from NIST's cybersecurity- and privacy-related publications--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.

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 516 matching records.
D
d
D/A
D/S
D2D
DA
DAA
DAC
DAD
DAG
DAO
DAR
DAS
DB
DBA
DBL
dBm
DC
DC3
DCE
DCG
DCO
DCS
dd
DE
DEA
DEP
DER
DES
DET
DEX
DFA
DFW
DG
DH
DHE
DHK
DHS
DI
DIA
DIB
DID
DIS
DIT
DIV
DLC
DLL
DLO
DLP
DLR
DLT
DMA
DMZ
DN
DNI
DNS
DOB
DOC
DoD
DOE
DOI
DoS
DoT
dP
DP
DPA
DPC
DPD
dpi
DPI
DPM
dQ
DR
DRB
DRM
DRP
DS
DSA
DSB
DSL
DSN
DSP
DSS
DT
DTD
DTR
DTS
DVD
DVR
DXE

* "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.