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An authenticator app takes security a step beyond passwords and traditional sms/mail based two-factor authentication (2FA) for your EFS account. The app uses an automatically generated secret key keys and a the current time window to create a unique code and log you incodes using the TOTP algorithm. It’s more secure than ordinary 2FA because it doesn’t use a message that someone could intercept in a man-in-the-middle attack.
To break into an account secured with an authenticator app, an attacker would require access the user’s secret key and the encryption algorithm. Since it’s very difficult to do so, authenticator apps are among the most secure login methods available today.
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Here is a list of our favourite authenticator apps, which we use for daily work. Our focus is on well known brands, ad-free and simplicity. Of course you can use any other authenticator app, which implements the TOTP algorithm, however please pay attention to the author, downloads and user feedback counts to be sure that the author is trustworthy and the app is safe to use.
There are also add-ons for browsers or operating systems that allow you to perform TOTP authentication without a cell phone.
Google Authenticator App
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Download for iOS: https://apps.apple.com/us/app/2fa-authenticator-2fas/id1217793794
Download for Android: https://play.google.com/store/apps/details?id=com.twofasapp&hl=en_US&gl=US
Authy
Another user favourite is Authy, with cloud backups and multi-device features.
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