What is multi-factor authentication (MFA)?

Multi-factor authentication (MFA) is a critical security mechanism designed to enhance the protection of user accounts and sensitive data. It requires individuals to provide two or more distinct forms of verification before gaining access to an account, system, or application. This form of security integrates multiple factors such as something the user knows (like a password), something the user has (such as a mobile device or security token), and something the user is (like biometric verification).

The purpose of MFA is to create an additional layer of security that greatly reduces the risk of unauthorized access. Even if one factor, like a password, is compromised, the requirement for further forms of verification helps to prevent breaches.

Options that focus on encryption, algorithm creation, or social media strategies do not encompass the foundational concept of MFA, which is fundamentally about verifying identity through multiple checkpoints. Thus, the emphasis on requiring multiple forms of verification underpins the effectiveness of MFA in protecting digital accounts and sensitive information.