MFA

Simple definition

MFA adds password protection, such as a phone validation or a security key.

Technical definition

The factors may be knowledge, possession or biometrics. phishing, like FIDO2 and passkeys, are more robust than SMS codes.

What is it used for ?

Protecting admin accounts, cloud, VPN and the accesses to the way to the city.

Practical example

After the password, the user confirms the connection in an authentication application.

Common issues

• Fatigue MFA caused by repeated requests
• Lost phone without emergency method
• SMS CUSTOMABLE
• Incompatible service accounts

Related terms

Phishing · VPN · Microsoft 365 · Entra ID · RDP

Key takeaway: This entry explains the general operation of the term. Exact settings may vary depending on software, vendors and environments.

See also: MFA Fatigue.