Primary definition
A method used to secure computer systems and/or networks by verifying a user's identity by requiring two-factors in order to authenticate (something you know, something you are, or something you have). Source: DoDI 8420.01
Also known as2FA · two-factor authentication · multi-factor authentication · MFA · two-step verification · 2-step verification · two-step authentication
2 sources cited4 related termsReviewed Aug 10, 2026
— Committee on National Security Systems Glossary CNSSI 4009-2015View source
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CNSSGC
A method used to secure computer systems and/or networks by verifying a user's identity by requiring two-factors in order to authenticate (something you know, something you are, or something you have). Source: DoDI 8420.01
Committee on National Security Systems Glossary CNSSI 4009-2015 · 2024
Cite this term
Permanent URL · stable across revisions
Election Security Glossary. (2026). Strong Authentication. In Election Security Glossary. Retrieved August 20, 2026, from https://electionsecurityglossary.com/glossary/strong-authentication
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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