Duo Security

Duo Security is a multi-factor authentication (MFA) system that enhances online security by requiring users to provide two pieces of information before logging in. The company's core product, Duo MFA, combines two-factor authentication (2FA) and digital identity verification to protect online accounts, applications, and data. Duo's authentication process typically involves entering a password followed by a secondary verification method, such as a push notification to a mobile device, an automated voice call, or an SMS verification code. The Duo Mobile app, available for iOS and Android, allows users to generate passcodes or receive push notifications for authentication.

Duo Security's solutions are designed to work with various applications, including online banking, email, and social media platforms. The company offers open APIs to enable integration with a wide range of applications that require enhanced security measures. In addition to its MFA product, Duo provides Duo Single Sign-On (SSO), a cloud-hosted solution that layers Duo's authentication and policy engine on top of existing identity providers. Duo also integrates with Google's Verified Access service to enable device trust checks for Chrome OS devices, ensuring that only managed devices can access protected resources.

Key customers and partnerships

Duo Security's multi-factor authentication solutions are used by numerous high-profile organizations and platforms. Facebook, Airbnb, WordPress.com, and Dropbox are among the notable companies that have implemented Duo's security measures. In the education sector, Duo has a significant presence, with institutions such as the University of Iowa, University of North Carolina at Chapel Hill, Georgetown University, University of South Carolina, Pace University, University of Idaho, and Ohio State University utilizing its services.

Duo Security has established partnerships with major technology companies. As of April 2024, Duo is recognized as a Chrome Enterprise Recommended partner by Google, collaborating to extend Duo's functionality for Chrome OS devices. This partnership allows organizations using Chrome OS to easily secure workforce access through Duo's integrations. Additionally, Duo has worked with Microsoft to provide authentication services for Azure Conditional Access protected applications, further expanding its reach in the enterprise security market.