Primary definition
Typically unauthorized hidden software or hardware mechanism used to circumvent security controls. (CNSSI-4009) (NISTIR)
Also known astrapdoor · maintenance hook · easter egg · covert channel · secret entry
1 sources cited4 related termsReviewed Aug 10, 2026
— The Cyber GlossaryView source
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TCG
Typically unauthorized hidden software or hardware mechanism used to circumvent security controls. (CNSSI-4009) (NISTIR)
The Cyber Glossary · 2024
Cite this term
Permanent URL · stable across revisions
Election Security Glossary. (2026). Back Door (backdoor). In Election Security Glossary. Retrieved August 20, 2026, from https://electionsecurityglossary.com/glossary/back-door-backdoor
Sources
1 cited · last checked Aug 10, 2026
01
The Cyber Glossary
The Cyber Glossary
Single-source
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