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Verify the identities of all users with MFA.

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Provide secure access to on-premise applications.

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Ensure all devices meet security standards.

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Provide secure access to any app from a single dashboard.

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Block or grant access based on users' role, location, and more.

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Whether you're considering a big-picture security strategy like zero trust, or you want to address a specific threat like phishing attacks, Duo has you covered.

Continuous Identity Security

Stop sophisticated identity-based attacks while providing a seamless authentication experience.

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This set of tools and policy controls ensures only the right users have access to applications and resources and under the right conditions.

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A zero trust model establishes trust in users and devices through authentication and continuous monitoring.

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Duo's comprehensive access security sets the stage for user-friendly, password-free multi-factor authentication.

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Secure your workforce against phishing attacks with strong multi-factor authentication, device trust and more.

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Duo’s dynamic solution detects and responds to potential threat signals to secure trusted users and frustrate attackers.

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Why Duo?

Why Duo?

Strong MFA Security that Doesn't Sacrifice Productivity

With Duo, you can have both, in a platform that integrates across your entire ecosystem. Every user, every device, no exceptions.

Why You Should Choose Duo

Have It All

Duo delivers peace of mind with strong security and increased productivity at an unmatched value.

Speed to Security

Reduce friction and automate processes so that end-users and administrators can focus their time on moving your business forward.

Next Level MFA

Duo continues to pioneer MFA-approaches that keep your business a step ahead of the next threat.

Protection and Productivity

Our Risk-Based Authentication reduces the burden placed on users so they can verify their identity quickly and get back to the task at hand.

Complete Coverage

Close the gap on your security perimeter and bring every user and every device under one secure roof.

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Duo Security is part of Cisco Security — find out how we make global security resilience easier than ever!

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Categories & Archive

Product & Engineering

January 19th, 2023 Matthew Brooks

Announcing General Availability of Server Message Block Protocol Support for Duo Network Gateway

We've got exciting news. Learn how our new update enables zero-trust access to files remotely using Duo Network Gateway by Cisco.

Product & Engineering

January 18th, 2023 Jennifer Golden

New Duo Feature Guide: Strengthening Your Multi-Factor Authentication

Duo has released a guide to highlight new capabilities that enhance multi-factor authentication protection. Learn more about the guide and Duo’s new features.

Industry News

January 16th, 2023 Chrysta Cherrie

The Life and Death of Passwords: Computing Era

During the computing era, the way we thought about passwords changed, as did the way that we went about protecting them. Learn more.

Product & Engineering

January 12th, 2023 Scott Grebe

Extend Your BYOD Security Policy and Start Trusting Unmanaged Devices with Duo Device Trust

Establishing trust in unmanaged personal devices used by contractors, seasonal hires, partners, even your own employees is a challenge. Learn how Duo can help.

Industry News

January 9th, 2023 Derrick Sison

3 Best Practices for Improving Mobile Device Security on Your Network

Trying to improve mobile device security on your network? We break down policies that will make the most impact, from screen locks to encryption.