![]() ![]() ![]() ![]() SMS-Based or Email-based OTPs: A common second factor for MFA is a one-time password (OTP) sent via text message or email that the user will type into an authentication page.However, it also has significant security concerns due to password reuse and password strength. Password: A password is a knowledge-based factor and the most common form of user authentication.MFA can be implemented with a wide range of factors. For example, the most common option is a combination of something you know (a password) and something you have (a device that generates/receives a one-time code). Something You Are: Inherence-based authentication factors identify a user based on unique attributes such as fingerprints, voiceprints, or facial recognition.Īn MFA system should use a combination of two of these three categories.Something You Have: Possession-based authentication factors require the user to have possession of a particular object such as a smartphone, smartcard, or physical authentication token (like a Yubikey).Something You Know: Knowledge-based authentication factors like a password require the user to remember some secret that will be typed into the authentication page.Most authentication factors fall into one of three categories: An authentication factor is a means of proving a user’s identity to a system. Many different types of MFA exist, using a range of authentication factors. As its name suggests, multi-factor authentication requires multiple authentication factors to gain access to a user’s account. ![]()
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