.. _log_in: ***** Login ***** BLUE leverages **Auth0** for authentication and authorization. This provides IDP authentication, Multi-Factor Authentication, encryption, and anomaly detection for protecting data and preventing unauthorized access. If this is your first login, follow this one-time authentication process after which you will be automatically redirected to the BLUE web interface. Auth0 Identification ^^^^^^^^^^^^^^^^^^^^ If your organization uses Auth0, follow these steps for initial login. #. Check your email for an Auth0 invite from your administrator to join BLUE and select **ACCEPT INVITATION**. An invitation window opens. #. Select **Continue** and you will be logged in to BLUE. From your second login onward, you will be automatically redirected to the BLUE interface. Other Identity Provider Identification ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ If your organization uses any other Identity Provider (IDP), follow these steps for initial login. #. Follow the BLUE URL provided by your admin. #. Once you're in, select **Log In**. #. You will then be redirected to your IDP page, where you will need to verify your credentials. This is a one-time process, after which you will be redirected back to the BLUE interface. From your second login onward, you will be automatically redirected to the BLUE interface.