Two-Factor Authentication

(1)

Two-factor authentication (2FA) adds a second verification step beyond a password — typically a code from an authenticator app, SMS, hardware token, or biometric. Coverage of 2FA methods, setup guidance, bypass risks, and the upgrade path from SMS-based 2FA to phishing-resistant alternatives like FIDO2 hardware keys and passkeys.

What Is a 2FA and Why It’s Essential for Your Online Security

Two-factor authentication (2FA) goes beyond passwords to keep your accounts safe. Discover how it works, the different types available, and why enabling 2FA is one of the simplest yet most effective steps you can take to protect your digital life.