In this video, I will explain all about two-factor authentication. Two Factor Authentication, also known as 2FA, it's an extra layer of online security for protecting online hacking attack. two-factor authentication is also called multi-factor authentication.
we have use user name & password for accessing the online account. But when our account enables 2fa, we have also provided second step verification after given the user name & password correctly. In the second step verification called two-factor authentication.
2FA depends on three something of user
1. something you know.
example: pin or password
2. something you have
example: physical device or software
3. something you are
example: fingerprint voice or other biometric

two-factor authentication works in different methods, first of al SMS token, email token, hardware token, software token, biometric verification, push notification, backup code etc.

Questions slove in this video.
1. What is 2-factor authentication?
2. Types of 2-factor authentication.
3. How do work 2-factor authentication apps?
4. How to works google authentication?
5. Advantages & Disadvantages of two-factor authentication.

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