Two-Factor Authentication

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Abbreviations / Acronyms / Synonyms:

2FA

NIST SP 1800-24B, NIST SP 1800-27B

Definitions:

Proof of the possession of a physical or software token in combination with some memorized secret knowledge.
Sources:
NIST SP 800-175A under two-factor authentication

Glossary Comments

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See NISTIR 7298 Rev. 3 for additional details.