Duo Security Inc.

Duo Security Inc., a Cisco-owned company headquartered in Ann Arbor, Michigan, specializes in zero-trust access and multi-factor authentication solutions that let organizations verify user identity and device health before every connection. Its Windows-focused portfolio centers on extending cloud-delivered policy enforcement to laptops and desktops: Duo Desktop continuously evaluates the endpoint’s OS patch level, firewall status, disk encryption, and running security tools, blocking or alerting when a device falls out of compliance; Duo Authentication for Windows Logon layers a second factor—push notification, hardware token, or biometrics—onto both local console sign-ins and Remote Desktop sessions, curbing credential-stuffing and pass-the-hash attacks; Duo Device Health supplies deeper telemetry for Premier and Advantage tenants, allowing admins to define granular rules around disk encryption state, antivirus signatures, or jailbreak detection and to quarantine non-conforming machines automatically. Typical use cases include universities that need to let students connect personal laptops to campus VPNs, hospitals subject to HIPAA workstation controls, and enterprises rolling out hybrid work without sacrificing visibility. Because Duo’s agents integrate with existing Active Directory, RADIUS, and SAML flows, security teams can phase in stronger checks without re-imaging hardware or rewriting Group Policy. All three Duo Security Inc. applications are offered free of charge on get.nero.com, fetched through trusted Windows package sources such as winget, always delivering the newest release and permitting unattended batch installation of multiple titles.