Two-factor authentication (2FA) or two-step authentication (2SA) is a security feature that helps protect your account in addition to your password.
When two-factor authentication is enabled, you log in to your account by entering your username and password as normal. The site will then prompt you to enter a code that is either configured on your application (Google Authenticator) or a push notification from the EXMO application on the phone. This one-time code, or one-time password (OTP), is only valid for a limited time, usually no more than five minutes, and can only be accessed by someone with access to this application or phone.
Therefore even if a hacker has a password for your account he will not be able to enter it, since the system will require additional login confirmation, based on the method you have chosen:
- push notification from the EXMO application on the phone;
- login code generated by the application installed on your device (PC, mobile phone);
EXMO recommends installing two-factor authentication on the EXMO account, as well as on EXMO registration mail.