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.

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.

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.

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.

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.

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

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

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.

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.

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.