Two-factor authentication explained: How to choose the right level of security for every account
How to set up 2-Factor Authentication (2FA) - UW Finance - Technology Shared Services - UW-IT Wiki
Use Security Keys with the Traditional Duo Prompt - Guide to Two-Factor Authentication · Duo Security
Types of two-factor authentication, pros and cons: SMS, authenticator apps, YubiKey
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Using Kerberos for Authentication Relay Attacks - vulnerability database
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How to set up the Two-Step Authorization (Google Authenticator). – Gaijin Support
Client to Authenticator Protocol (CTAP)
Types of two-factor authentication, pros and cons: SMS, authenticator apps, YubiKey