What is two-factor authentication (2FA)?

Two-factor authentication (2FA) is a form of multi-factor authentication (MFA), and is also known as two-step authentication or two-step verification. 2FA is a security measure that requires end-users to verify their identities through two types of identifiers to gain access to an application, system, or network.

What is 2FA & how does it work?

Some platforms call 2FA different things—Multi-Factor Authentication (MFA), Two Step Verification (2SV), or Login Approvals—but no matter the name, the idea is the same: Even if someone gets your password, they won’t be able to access your accounts unless they also have your phone or security key.

Does your business need 2FA?

Many business services now offer 2FA, some even giving admins the option to require it for all accounts in the organization. These are just a few platforms that currently provide support for two-factor authentication: Google, Slack, Facebook, Twitter, Instagram, Microsoft, Apple, Dropbox.

What is push-based 2FA?

Push-based 2FA improves SMS 2FA and TOTP authentication in a couple of ways. It's even more convenient because it all works through a standard notification on your phone — all you need to do is read and tap. It's also much more resistant to phishing and so far has shown to be very "hack" resistant. Never say never, though.