Catholic University uses multi-factor authentication (MFA) for enhanced security: Duo for university services, and Google 2-Step Verification for Cardinal Mail.
Learn how register your phone and activate the Duo Mobile application to receive Duo requests and tap to approve and log on.
Protect your Cardinal Mail account by enabling 2-Step Verification.
Learn which University systems and services require Duo for authentication
Read tips on how to overcome common Duo issues.