Primary definition
Information Security strategy integrating people, technology, and operations capabilities to establish variable barriers across multiple layers and missions of the organization. Source: NIST SP 800-53 Rev 4
Also known aslayered defense · security in depth · DiD
5 sources cited4 related termsReviewed Aug 9, 2026
— Committee on National Security Systems Glossary CNSSI 4009-2015View source
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CNSSGC
Information Security strategy integrating people, technology, and operations capabilities to establish variable barriers across multiple layers and missions of the organization. Source: NIST SP 800-53 Rev 4
Committee on National Security Systems Glossary CNSSI 4009-2015 · 2024
Cite this term
Permanent URL · stable across revisions
Election Security Glossary. (2026). Defense In Depth. In Election Security Glossary. Retrieved August 22, 2026, from https://electionsecurityglossary.com/glossary/defense-in-depth
Sources
5 cited · last checked Aug 9, 2026
01
Committee on National Security Systems Glossary CNSSI 4009-2015
Committee on National Security Systems Glossary CNSSI 4009-2015
High consensus
02
EAC Glossary of Terms
EAC Glossary of Terms
Multi-source
03
EAC Information Technology Terminology
EAC Information Technology Terminology
Multi-source
04
NIST Election Glossary
NIST Election Glossary
Multi-source
05
The Cyber Glossary
The Cyber Glossary
Disputed
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