Duo Push Authentication Guide Approve or Deny

Duo Push Authentication Guide - For UT San Antonio Faculty, Staff and Students

Duo Push makes authentication simple and reliable by using your mobile device to verify your login.

  • Approve – Confirms your identity and grants access to the application.
  • Deny – Blocks the login attempt, helping prevent unauthorized access.

Step 1: Initiate Authentication

  • When logging into a Duo-protected application or service, select Duo Push as your authentication method.

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  • A login request will be sent to your registered mobile device.

 

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Step 2: Respond to the Push Notification

  • If the request is expected:
    Tap Approve to authenticate successfully
  • If the request is unexpected:
    Tap Deny to reject the login attempt

Step 3: Handle Unexpected Requests

  • After tapping Deny, you’ll be asked:
    “Was this a suspicious login?”

 

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  • Tap Yes if you did not initiate the login and suspect fraud.
    • Duo will:
      • Silence all Duo Mobile notifications for 20 minutes
      • Allow you to approve requests manually via the Duo Mobile app
      • Send a Fraudulent Authentication Report email to Duo Admins
    • Tap OK to continue to the Duo Mobile app.

 

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  • Tap No if the login was not suspicious (e.g., accidental request).

Step 4: Security Best Practices

  • Denying a Duo Push has no negative implications.
  • Marking a request as suspicious helps report fraudulent activity.
  • Never respond to emails requesting your username, password, or phone number.
    • Forward suspicious emails to Spam@uthscsa.edu or click the Phish button.
    • Contact the Service Desk at 210-567-7777 opt 1 to verify legitimacy

Step 5: If Credentials Were Compromised