25 lines
651 B
Markdown
25 lines
651 B
Markdown
# Authentication Factor
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- something the user knows
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- password
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- PIN
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- secret question
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- something the user has
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- ATM card
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- security badge
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- key fob
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- browser cookie
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- smartphone
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- something the user is
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- biometrics (face, voice, fingerprint, gait)
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- something about the user's context
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- location
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- time
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- devices in proximity
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- recent actions
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- individually have weaknesses
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- knowledge can be copied/transferred/learned or forgotten
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- possessions can be stolen/cloned or lost
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- biometrics can be easily faked and irreversibly altered
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- habits can be guessed or broken
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- combining them makes them stronger (2fa/mfa)
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