What is Two-factor authentication?
Also called: 2FA, MFA
The short answer
Two-factor authentication requires a second proof of identity, such as an app code or security key, in addition to a password to log in.
Two-factor authentication, explained
Turning it on for the registrar, host, email and payment accounts prevents the most common and most damaging takeovers.
Questions people ask about Two-factor authentication
What is Two-factor authentication?
Two-factor authentication requires a second proof of identity, such as an app code or security key, in addition to a password to log in.
Related terms
Website security is protecting a site, its data and its visitors from attacks, through HTTPS, updated software, careful input handling, strong logins and backups.
Domain registrarA domain registrar is an accredited company that sells and manages domain name registrations.
PasskeysPasskeys replace passwords with cryptographic keys stored on a device and unlocked by fingerprint, face or PIN, and cannot be phished or reused.
Cross-site scriptingCross-site scripting is an attack where malicious code is injected into a page and runs in other visitors' browsers, stealing sessions or data.
Part of the Web Encyclopedia by Apex Flow Digital. Definitions are general knowledge, kept current, with no invented statistics.