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Duo’s Trusted Access platform verifies the identity of your users with two-factor authentication and security health of their devices before they connect to the apps you want them to access.


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At Duo, we combine security expertise with a user-centered philosophy to provide two-factor authentication, endpoint remediation and secure single sign-on tools for the modern era.


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Phishing Assessment Made Easy. Duo Insight is a free phishing assessment tool by Duo Security that allows you to find vulnerable users and devices in minutes and start protecting them right away.


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Web Portal\DUO Security for iOS Devices iPhone (Mobile Phone) Set Up *This requires both your phone and PC. This document contains instructions on phone install, tablet install and FAQ’s.


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Second Factor With Your Phone. Duo Security offers an enterprise-scale second-factor authentication service. Formerly an InCommon service, the Duo program has transitioned to an Internet2 cloud services offering.


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Duo Security Enrollment. Penn State Health uses Duo Security's Two Factor Authentication solution to protect our user's accounts.


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Create Your Duo Account. Trusted by some of the smartest organizations in the world.


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Enrollment Guide. Duo's self-enrollment process makes it easy to register your phone and install the Duo Mobile application on your smartphone or tablet.


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What is Two-Factor Authentication? Two-factor authentication adds a second layer of security to your online accounts. Verifying your identity using a second factor (like your phone or other mobile device) prevents anyone but you from logging in, even if they know your password.


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Duo Mobile works with Duo Security's two-factor authentication service to make logins more secure. The application generates passcodes for login and can receive push notifications for easy, one-tap authentication.