What is Two-Factor Authentication?
Two-factor authentication (2FA) is a security method that requires users to provide two different forms of identification before accessing an account or system. It combines something you know (password) with something you have (phone or security key) or something you are (biometrics).
How Does Two-Factor Authentication Work?
Two-factor authentication adds a critical second layer of security beyond just a password. Even if an attacker obtains your password through phishing, data breaches, or brute force, they still cannot access your account without the second factor. Common second factors include time-based one-time passwords (TOTP) from authenticator apps, SMS codes, hardware security keys, and biometric verification.
In web hosting, enabling 2FA is essential for protecting server access, hosting control panels, domain registrar accounts, and DNS management. A compromised hosting account can lead to website defacement, data theft, or complete loss of your online presence. Most hosting providers and domain registrars now support 2FA, and using hardware security keys or authenticator apps is recommended over SMS codes, which are vulnerable to SIM swapping attacks.