A security mechanism that requires multiple forms of verification to gain access to an account or system.
Description
Multi-Factor Authentication (MFA) is a security approach that enhances the protection of user accounts by requiring more than one method of verification. In the context of Single Sign-On (SSO) protocols, MFA adds an extra layer of security beyond just a username and password. Users typically need to provide something they know (like a password), something they have (like a smartphone or security token), and sometimes something they are (like a fingerprint or facial recognition). This layered approach significantly reduces the risk of unauthorized access, as it is much harder for attackers to meet all the verification requirements. For example, if a user’s password is compromised, an additional factor such as a one-time code sent to their mobile device is still needed to log in. Popular platforms such as Google and Microsoft have implemented MFA to protect user accounts, making it a widely recognized standard for securing digital identities in SSO environments.
Examples
- Google Authenticator app generates time-based codes for logins.
- Microsoft Azure Active Directory offers MFA options including SMS and mobile app notifications.
Additional Information
- MFA can significantly lower the risk of data breaches by requiring multiple proofs of identity.
- Many organizations are now adopting MFA as part of their security policies to comply with industry regulations.