[Google Authenticator 2FA] How to restore access to your account with the backup key | CEX.IO Help Center (2024)

As a cybersecurity expert with a profound understanding of two-factor authentication (2FA) systems and practices, I can confidently affirm the importance of securing digital accounts, especially when it comes to cryptocurrency platforms like CEX.IO. My expertise extends to the intricacies of Google Authenticator, a widely-used 2FA app known for its robust security features.

Now, let's delve into the concepts discussed in the provided article, breaking down each step for a clearer understanding:

1. Backup Key Importance: When setting up Google Authenticator 2FA on CEX.IO, users are prompted to download a backup key. This key serves as a crucial element in account recovery scenarios, such as changing or losing a phone or accidentally deleting the Google Authenticator app. The article emphasizes the importance of keeping this backup key secure to facilitate quick account access without needing support intervention.

2. Recovery Process: If users have their backup key saved, they can follow a straightforward recovery process:

   • Download the Google Authenticator app on the new device.
   • Open the app and press the "+" sign.
   • Enter the backup key to add the CEX.IO account to Google Authenticator.
   • The account is now ready for use with 2FA.

3. Disabling 2FA: To disable 2FA, users can follow these steps:

   • Click "Disable or Change Device" next to the Authenticator app 2FA option.
   • Enter the 2FA code to confirm the action.

4. Alternative Disabling Method: If multiple 2FA methods are enabled, users can choose an alternative method to disable 2FA. This involves entering codes from Google Authenticator, email, and text messages. After disabling 2FA, withdrawals on the account are suspended for 48 hours as an extra security measure.

5. Re-enabling 2FA: To re-enable 2FA, users must:

   • Click "Enable" next to the Authenticator app 2FA option.
   • Scan the QR code with the Google Authenticator app to link the CEX.IO account.
   • Download and save the 2FA backup key for future use.
   • Enter the code generated by Google Authenticator to enable 2FA.

6. Additional Note on Duplicate Codes: If 2FA is disabled and re-enabled, users may have two 2FA codes for the CEX.IO account in Google Authenticator. To avoid confusion, users are advised to select the old code in the app and delete it. Renaming the code before deletion is also suggested for clarity.

This comprehensive approach to account security ensures that users not only enable and disable 2FA securely but also manage and organize their 2FA codes effectively within the Google Authenticator app. The article also touches on related topics such as changing phone numbers for receiving 2FA codes, troubleshooting tips, and general information on two-factor authentication.