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What is multi-factor authentication?
Multi-factor authentication (MFA) is a security technology that requires multiple methods of authentication to verify a user's identity for a login or other transaction.
It is more than a single authentication like password protection. It is a combination of two or more verification factors to gain access to a resource, such as email, application, or online account, to name a few.
Two-factor authentication (2FA) requires users to present two types of authentications, while MFA requires users to present at least two, if not more types of authentications. A key goal for MFA is to add additional authentication factors to increase security.
Most MFA authentication methodology is based on one of three types of additional information:
- Things you know (knowledge), such as a password or PIN
- Things you have (possession), such as a badge or smartphone
- Things you are (inherence), such as a biometric like fingerprints or voice recognition
Example:
When you log into a domain, such as Office365 with your username and password, (Username: me@domain.com ; Password: password123) what multi-factor authentication adds is another method of authentication or 2nd factor.
When MFA is enabled for such domains as Office365, when you login the “something you know” which is your username and password, you will then be contacted on the “something you have” (mobile phone).
You can be contacted via voice, text, or by an app on your phone. If you use voice, a phone call will occur, so you can identify who you are. If you use the form of text, you will receive a text message that you will need to use a code to complete your authentication. If you use an MFA application on your mobile phone, you will complete the authentication with a prompt on the installed app.
Another method of MFA is “something you are”. This method will include a biometric scanning by using a fingerprint, retina, or full facial scanning.
Please view some of the videos below to better understand what MFA is.
FAQ Box
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What are the 3 factors in MFA?
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What are the challenges with multi-factor authentication?
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What is Multi-Factor Authentication (MFA)?