005 - Multi Factor Authentication
2FA:
- What are Factors (Knowledge, Have, Are, Location)
- SMS
- Dongle-based Code (RSA Tokens, etc)
- Push-Based Auth (Duo)
- TOTP (Google Authenticator, Authy, etc)
- Yubico OTP
- U2F, FIDO2, WebAuthn
- Fall Back Safety
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