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USD is committed to helping students, faculty and staff protect themselves online from serious threats such as losing a paycheck, a financial aid refund or even your own identity.

The university protects its most vital, widely-accessed university and personal information resources with Duo two-factor authentication. This additional layer of protection provides insurance against threats to faculty, staff and student personal information, sensitive research data and other university information and resources.

The University requires Multi-Factor Authentication (MFA) for all faculty, staff and new students. It will become mandatory for all students on January 27, 2021. If you have not yet enrolled, please take a few minutes to do so!

How do I enroll?

When you log in with your ID and password to access services using the new procedure, you will be prompted to enroll.

Steps for signing up:

  1. Install Duo Mobile app from the Apple App Store or Google Play Store
  2. Visit
  3. Sign in with USD user name and password
  4. Follow instructions on the screen

What is Duo Security?

Duo logo that states "Duo."Duo Security is a company that provides a cloud-based software service that utilizes two-factor authentication to ensure secure access to services and data. Learn more by clicking here.

What is two-factor authentication?

Two-factor authentication provides a second layer of security to any type of login, requiring extra information or a physical device to log in, in addition to your password. By requiring two different channels of authentication, we can protect user logins from remote attacks that may exploit stolen usernames and passwords.

The factors may include:

  • Something you know: A unique username and password.
  • Something you have: A smartphone with an app to approve authentication requests.
  • Something you are: Biometrics – such as your fingerprint or a retina scan.

Why do we need two-factor authentication?

Login credentials are more valuable than ever and are increasingly easy to compromise. More than 90 percent of breaches today involve compromised usernames and passwords.

Two-factor authentication enhances the security of your account by using a secondary device to verify your identity. This prevents anyone but you from accessing your account, even if they know your password.

How will Duo change my login experience?

When logging in to an application protected by Duo, you will still enter your username and password (something you know). After verifying your login information, Duo requires you to complete a second authentication using the Duo Mobile App or a hardware token (something you have).

Duo does not replace or require you to change your username and password. Think of Duo as a layer of security added to your pre-existing login method.