Multi-factor authentication or MFA requires multiple factors to authenticate a user. Two-factor authentication (2FA) is an MFA with two factors. There is no real limit on how many factors we can add but it’s not practical for a user to use many factors as it hurts usability of the application if the login process is too long and complicated. Adding a second factor is usually enough to stop the brute-force and dictionary attacks.

Bharat Dwarkani shared on Nov 24, 2019
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