What is Two-Step Login (Duo) and how does it work?

Important:

As of November 2, 2017, CAS logins for all IU students, faculty, staff, retirees, affiliates, and those with Academic (ACNP) status require Two-Step Login (Duo). As of November 30, 2017, this also includes group or departmental accounts. IU Guest accounts do not require Two-Step Login. For more, see About using Two-Step Login (Duo) every time I log into CAS.

Note:

To lessen the number of times you need to complete a Two-Step Login with Duo, select Remember me for 12 hours when completing a Two-Step login. This will keep you from having to Two-Step for CAS logins for 12 hours in the browser from which you initiated your login.

Duo screen with option to remember me for 12 hours

Two-Step Login (Duo) provides an additional layer of security when you log into some IU systems. Two-Step Login, also known as two-factor authentication, helps protect sensitive data and guard against increasingly sophisticated email and online scams (e.g., phishing attacks) that can leave you vulnerable to identity theft. IU has partnered with Duo to provide this service.

Like similar services offered by Google and Facebook, you log in by:

  1. Entering your username and passphrase.
  2. Confirming your login with an enrolled device.

UITS recommends using the Duo Mobile app on your smartphone or tablet, but if you don't have such a device, regular cell phones, landlines, Google Voice phone number, and U2F tokens are also supported. Single-button hardware tokens (SBHTs) are also being made available.

For step-by-step instructions for all options, see Getting started with Two-Step Login (Duo) at IU.

To see how this works, view a video about Two-Step Login in action.

This is document beum in the Knowledge Base.
Last modified on 2017-11-30 00:17:06.

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