Primary definition
A form of active wiretapping attack in which the attacker intercepts and selectively modifies communicated data to masquerade as one or more of the entities involved in a communication association. Source: IETF RFC 4949 Ver 2
Also known asMitM · man in the middle · machine-in-the-middle · monster-in-the-middle · on-path attack · person-in-the-middle
1 sources cited4 related termsReviewed Aug 9, 2026
— Committee on National Security Systems Glossary CNSSI 4009-2015View source
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CNSSGC
A form of active wiretapping attack in which the attacker intercepts and selectively modifies communicated data to masquerade as one or more of the entities involved in a communication association. Source: IETF RFC 4949 Ver 2
Committee on National Security Systems Glossary CNSSI 4009-2015 · 2024
Cite this term
Permanent URL · stable across revisions
Election Security Glossary. (2026). Man In The Middle Attack (mitm). In Election Security Glossary. Retrieved August 13, 2026, from https://electionsecurityglossary.com/glossary/man-in-the-middle-attack-mitm
Sources
1 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
Single-source
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