Primary definition
collection of entities to which applies a single security policy executed by a single authority. SOURCE: FIPS 188 A domain that implements a security policy and is administered by a single authority. (SP 800-37; SP 800-53; CNSSI-4009) (NISTIR)
Also known asSecurity Domain A · SD-A · Sec Domain A
1 sources cited4 related termsReviewed Aug 10, 2026
— The Cyber GlossaryView source
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TCG
collection of entities to which applies a single security policy executed by a single authority. SOURCE: FIPS 188 A domain that implements a security policy and is administered by a single authority. (SP 800-37; SP 800-53; CNSSI-4009) (NISTIR)
The Cyber Glossary · 2024
Cite this term
Permanent URL · stable across revisions
Election Security Glossary. (2026). Security Domain – A. In Election Security Glossary. Retrieved August 14, 2026, from https://electionsecurityglossary.com/glossary/security-domain-a
Sources
1 cited · last checked Aug 10, 2026
01
The Cyber Glossary
The Cyber Glossary
Single-source
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