What does multi-factor authentication (MFA) require?

Multi-factor authentication (MFA) enhances security by requiring two or more verification factors from different categories of authentication methods. This typically includes something the user knows (like a password), something the user has (like a smartphone or security token), and something the user is (biometric information such as a fingerprint). The essence of MFA is to create a layered security approach that makes it more difficult for unauthorized users to gain access to an account or system. By incorporating multiple verification factors, MFA significantly reduces the risk of security breaches and strengthens overall security posture.