Duo Security is a cloud-based identity verification and device vulnerability assessment solution that offers multiple two-factor authentication methods, customizable permissions and controls, endpoint visibility and remediation, single sign-on (SSO), and more. Duo Trusted Access is designed to address potential security threats by verifying users' identity and device health before they are allowed to connect to an organization's applications.

Duo verifies users' identities in a number of ways using two-factor authentication methods, including SMS passcodes, phone callbacks, hardware tokens, and one-touch authentication via push notifications from the Duo Mobile app.

Administrators can configure and enforce custom policies and access controls, including blocking users from logging in from specific locations, such as countries where the company does not do business.

Duo allows users to create an inventory of user devices and use that data to identify vulnerabilities posed by legacy operating systems, browsers, and Flash and Java plug-ins.

Duo Access Gateway offers a secure web portal to provide single sign-on (SSO) access for employees using 10 or more cloud applications.