Definition
MFA is multi-step verification: it combines password, phone, app or fingerprint to protect the account.
Example
Example: if a message uses mfa to pressure you into clicking, paying, or sharing data, verify it outside the message first.
See also
2fa2FA means double check: besides the password, you need a second proof such as a phone code.otpOTP means one-time code: the temporary number you receive to confirm a login or payment.phishingPhishing is when someone pretends to be your bank or a company to steal data or money by email, SMS or phone.