Cybersecurity definition
What is MFA?
MFA stands for Multi-Factor Authentication.
By Cyber Tool Stack Editorial TeamUpdated
Definition
A login flow that requires a second proof of identity beyond a password, such as a push approval, one-time code, or biometric check, so a stolen password alone isn't enough to log in.
Where MFA fits in the security landscape
These beginner lessons use this term while explaining the surrounding security control.
Related cybersecurity terms
PasswordlessAuthentication that replaces the password entirely, relying instead on a device, security key, or biometric as the primary credential.PasskeyA phishing-resistant, passwordless credential stored on a device that uses cryptography to prove identity to a specific website or app, without ever transmitting a shared secret that could be stolen.