What is a key component of Multi-Factor Authentication?

A key component of Multi-Factor Authentication (MFA) is the requirement of two or more forms of verification. This approach enhances security by ensuring that even if one factor, such as a password, is compromised, an attacker still cannot gain access without the additional forms of authentication. MFA typically involves a combination of something the user knows (like a password), something the user has (like a mobile device for receiving a one-time passcode), and something the user is (such as biometric data like fingerprint recognition). By using multiple verification methods, MFA provides a layered defense that significantly reduces the risk of unauthorized access.

In contrast, a single user password alone does not meet the criteria for MFA, as it relies solely on one factor. Physical fingerprint recognition, while a secure method of authentication, constitutes only one form of verification and does not encompass the full concept of MFA unless combined with other factors. Password reset links sent to email are useful for recovering access but do not qualify as an authentication factor for initial access or for confirming identity in a secure manner.