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

Glossary terms and definitions last updated: February 26, 2024

This Glossary includes terminology from the final version of NIST's cybersecurity and privacy publicationsFederal Information Processing Standards (FIPS), NIST Special Publications (SPs), and NIST Internal/Interagency Reports (IRs)—and from Committee on National Security Systems (CNSS) Instruction CNSSI-4009. It may be expanded to include relevant terminology from external or supplemental U.S. Government sources, such as applicable laws, regulations, or policy.

  • Cite the source publication, not this website. As our documents are published and withdrawn, the terminology on these web pages will change. When citing terms and definitions, we encourage you to cite the source publication for the authoritative terminology and to understand it in its proper context. Many terms on this website have different definitions, from multiple publications.
  • Inclusive language. Some existing NIST publications may contain potentially biased or confusing terminology. As we develop and revise publications, we follow NIST's inclusive language guidance.
  • Public input. We invite public comments—including terminology suggestions—on our draft publications and welcome your contributions.
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 1074 matching records.
0s
S
s
s2
S4
SA
SAC
SAD
SAE
SAM
SAN
SAO
SAP
SAR
SAS
SAV
SB
SBA
SBH
SBU
SC
SCA
SCC
SCI
SCM
SCP
SCV
SCW
SD
SDA
SDC
SDK
SDL
SDN
SDO
SDP
SDR
SDS
SE
SEC
SED
SEG
SEI
SEL
SEM
SEP
SEV
SF
SFA
SFC
SFS
SGT
SGX
SHA
SHS
SI
SIA
SID
SIF
sig
SIG
SIM
SIP
SIS
SK
SKL
SKU
SLA
SLC
SLO
SM
SMB
SMC
SME
SMI
SML
SMM
SMS
SMT
Sn
SNI
SNS
SO
SOA
SOC
SoD
SoM
SOP
SoR
SoS
SOW
SOX
SP
SPA
SPD
SPF
SPI
SPK
SPL
SPM
SPN
SPP
SPS
SPT
SQL
SQN
SRA
SRB
SRG
SRK
SRM
SRP
SRR
SSA
SSC
SSD
SSE
SSH
SSI
SSL
SSM
SSN
SSO
SSP
STA
STD
STE
STK
STP
STS
STT
STU
SU
SVM
SVP
SW
SW1
SW2
SwA
SWG

* "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.