Two-Factor Authentication Guide
Learn how to secure your accounts with two-factor authentication (2FA). Understand different 2FA methods and best practices for implementation.
Understanding 2FA
Two-factor authentication adds an extra layer of security: - Something you know (password) - Something you have (device/token) - Something you are (biometrics)
Benefits: - Prevents unauthorized access - Protects against password theft - Alerts you to login attempts - Reduces account takeover risk
2FA Methods
Common 2FA methods:
1. Authenticator Apps - Google Authenticator - Authy - FreeOTP - Aegis (open source)
2. Security Keys - YubiKey - Google Titan - Nitrokey - SoloKeys
3. SMS/Email (less secure) - Text message codes - Email verification - Voice calls
4. Biometric Authentication - Fingerprint - Face recognition - Voice recognition
Setting Up 2FA
Steps to enable 2FA: - Access account security settings - Choose 2FA method - Follow setup instructions - Save backup codes - Test authentication - Configure backup methods - Document recovery options
Best Practices
Follow these guidelines: - Use authenticator apps over SMS - Keep backup codes secure - Enable 2FA on all important accounts - Use hardware keys when possible - Regular security audits - Keep recovery options updated - Don't share 2FA codes
Recovery Planning
Prepare for potential issues: - Store backup codes safely - Set up multiple 2FA methods - Configure recovery email - Document recovery process - Test recovery procedures - Keep device backups - Update emergency contacts