Multi-factor Authentication

Multi-factor authentication is a security process that requires users to provide multiple forms of verification before granting access to an account, system, or application. The goal is to add an extra layer of security beyond just a username and password, thereby reducing the risk of unauthorized access due to compromised credentials.

Something You Know: This is usually a password or PIN that the user knows. It’s the most common form of authentication, but it’s also the easiest to compromise if it’s the only factor used.

Something You Have: This refers to something physical that the user possesses, such as a smartphone, security token, or smart card. This device generates or receives a one-time code that the user must enter along with their password to authenticate.

Something You Are: This involves biometric authentication methods, such as fingerprint, facial recognition, or iris scan. Biometric data is unique to each individual and provides a highly secure form of authentication.

By combining two or more of these factors, multi-factor authentication significantly enhances security by requiring attackers to overcome multiple barriers to gain unauthorized access. This makes it more difficult for attackers to compromise accounts through stolen passwords or other means. Many online services, banking systems, and corporate networks now offer multi-factor authentication as an option to better protect user accounts and sensitive data.