Primary definition
1. A persistent visible window on a computer monitor that displays the highest level of data accessible during the current session. 2. The opening screen that informs users of the implications of accessing a computer resource (e.g. consent to monitor).
Also known asclassification banner · access banner · login banner · system use notification · warning banner
2 sources cited4 related termsReviewed Aug 10, 2026
— Committee on National Security Systems Glossary CNSSI 4009-2015View source
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CNSSGC
1. A persistent visible window on a computer monitor that displays the highest level of data accessible during the current session. 2. The opening screen that informs users of the implications of accessing a computer resource (e.g. consent to monitor).
Committee on National Security Systems Glossary CNSSI 4009-2015 · 2024
Cite this term
Permanent URL · stable across revisions
Election Security Glossary. (2026). Security Banner. In Election Security Glossary. Retrieved August 20, 2026, from https://electionsecurityglossary.com/glossary/security-banner
Sources
2 cited · last checked Aug 10, 2026
01
Committee on National Security Systems Glossary CNSSI 4009-2015
Committee on National Security Systems Glossary CNSSI 4009-2015
High consensus
02
The Cyber Glossary
The Cyber Glossary
Disputed
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