Cybersecurity

Verified

·

High Consensus

Closed Security Environment

Primary definition

Environment providing sufficient assurance that applications and equipment are protected against the introduction of malicious logic during an information system life cycle. Closed security is based upon a system's developers, operators, and maintenance personnel having sufficient clearances, authorization, and configuration control.

Also known assecure development environment · controlled security environment · secure operational environment · trusted environment · CSE
2 sources cited4 related termsReviewed Aug 9, 2026
Committee on National Security Systems Glossary CNSSI 4009-2015View source

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CNSSGC

High consensus

Environment providing sufficient assurance that applications and equipment are protected against the introduction of malicious logic during an information system life cycle. Closed security is based upon a system's developers, operators, and maintenance personnel having sufficient clearances, authorization, and configuration control.

Committee on National Security Systems Glossary CNSSI 4009-2015 · 2024

Cite this term

Permanent URL · stable across revisions
Election Security Glossary. (2026). Closed Security Environment. In Election Security Glossary. Retrieved August 21, 2026, from https://electionsecurityglossary.com/glossary/closed-security-environment

Sources

2 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

View source

02

The Cyber Glossary
The Cyber Glossary

High consensus

View source

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