What does multi-factor authentication enhance in network security?

Multi-factor authentication (MFA) significantly enhances security by requiring users to present multiple forms of verification before granting access. This method combines something the user knows (like a password), something the user has (such as a smartphone or a security token), and something the user is (like biometric verification). By integrating more than one verification factor, MFA ensures that even if one factor (like a password) is compromised, unauthorized access is still prevented because the additional verification factors are still necessary to complete the authentication process.

This multi-layered approach makes it much harder for attackers to gain unauthorized access to sensitive systems and data. For example, if an attacker manages to steal a password, they would still need the second factor, such as a physical device or biometric data, to successfully infiltrate the network. Therefore, the introduction of multiple verification methods enhances the overall security posture of the network by building a robust barrier against potential breaches.