Primary definition
Information outside of the message text, such as the header, trailer, etc. (CNSSI-4009) (NISTIR)
Also known asMessage Externals · Message Externals (CNSSI-4009) · Message Externals (NISTIR) · Externals · Message External Data · External Message Information
1 sources cited4 related termsReviewed Aug 10, 2026
— The Cyber GlossaryView source
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TCG
Information outside of the message text, such as the header, trailer, etc. (CNSSI-4009) (NISTIR)
The Cyber Glossary · 2024
Cite this term
Permanent URL · stable across revisions
Election Security Glossary. (2026). Message Externals. In Election Security Glossary. Retrieved August 16, 2026, from https://electionsecurityglossary.com/glossary/message-externals
Sources
1 cited · last checked Aug 10, 2026
01
The Cyber Glossary
The Cyber Glossary
Single-source
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