Two-factor Authentication (2FA)

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Security Tips in Companies – Protecting information through the use of two-factor authentication (2FA)

The implementation and use of two-factor authentication (2FA) is a good measure to consider. This practice requires users to login to their accounts using not just a username and a password, but something extra like a token that flashes some code every so often. A good example is Google Authenticator, and it is free. A site like Google mail requires a user to login to their accounts by providing a code sent to their mobile phones via Short Message Service (SMS).