What is MFA? And Why do I need it?

MFA combines factors from different categories. A fingerprint or face is another factor category, something you are. This slide gives the familiar password plus Authenticator example. MFA reduces account-takeover risk but does not stop every attack. Never approve a request you did not start. Sources: https://learn.microsoft.com/en-us/entra/identity/authentication/concept-mfa-howitworks and https://support.microsoft.com/en-gb/security/what-is-multifactor-authentication