Skip navigation

About Duo: People-Focused, Powerful Data Security

At Duo, we put people first — whether that's protecting user data for the over 40,000 customers who use our cybersecurity protection or supporting the people who work every day to make our products effective, user-focused and intuitive. We don’t thrive on fear, uncertainty and doubt; we build secure access solutions you can trust.

Free Trial

An image of people working on their own devices and leveraging various means of secure authentication through Duo
image of an virtual online meeting with the host and multiple attendees

What Makes Duo Special

From Duo’s easy-to-use multi-factor authentication (MFA) to MFA-attack-preventing risk-based authentication, Duo provides first-class zero trust tools.

Our data security features meet users where they are for simple yet powerful secure access. Fewer roadblocks means users are more likely to adopt best cybersecurity practices and create a safer world for data for all!

Duo was named the best two-factor authentication (2FA) app by the New York Times Wirecutter! Check out why they chose Duo Mobile and how we can help protect your accounts.

Explore Duo Security Solutions

We’ve Got You and Your Users Covered  

Duo supports any user and any device, whether company-owned or BYOD (bring your own device). We seamlessly integrate with on-premises and cloud apps too! 

Just Right for Your Cybersecurity Needs 

Duo grows with your business! Our flexible and scalable tools offer authentication methods for all your users’ needs. 

Faster Than a Speeding Hacker 

With rapid deployment and an easy-to-use product that your users can adopt quickly, Duo helps you quickly respond to changing threats. 

Easy to Use 

Users love how simple Duo makes it to enroll and authenticate. Administrators appreciate how easy it is to deploy Duo and manage our powerful tools. 

Secure Access Awards and Recognition

We give users an effective, person-first product with great customer resources — how can people help falling in love?

A Trustradius logo which is a third party review site that rates security products such as Duo

2024 TrustRadius Top Rated for Authentication, Single Sign-On (SSO), and Cloud Computing Security.

SC awards logo representing cybersecurity’s most prestigious and competitive honor given by SC Magazine

2022 SC Magazine Trust Award: Best Authentication Technology 

A logo image of eSecurity Planet,  a leading resource for IT professionals at large enterprises who are actively researching cybersecurity vendors and trends

2022 eSecurity Planet: Best IAM Solution 

Duo Passwordless earned a spot as FastCompany’s 2023 finalist for Most Innovative Security Design. Innovation at its best.

Cisco Duo won PeerSpot’s 2023 Best ZTNA as a Service  award. Excellence in zero trust access.

image of person using Duo multi-factor authentication and securely logging into their network securely from their mobile device

From Multi-Factor Authentication (MFA) to Risk-Based Authentication: Duo’s History

Founded in 2010 by Dug Song and Jon Oberheide, Duo Security began as a secure access company focused on multi-factor authentication (MFA) that was dedicated to being kinder than necessary and building for the future. We expanded beyond our Ann Arbor, Michigan, beginnings in 2015 to meet the increased, international need of over 2,000 customers. No matter how much we grew, we never stopped placing customer experience and customer trust first, expanding our data security offerings beyond MFA with tools that were easy, effective and enduring.  

Cisco acquired Duo Security in 2018, helping us reach over 40,000 customers in over 100 countries as part of the Cisco Security suite of products! 

About Cisco Security

Cybersecurity Careers at Duo 

Do work that you love with Duo! Our user-focused products make meaningful change for a safer world, and we love bringing in new voices who are ready to collaborate and innovate to build for the future. Find out more about our open positions and get ready to join our compassionate, engaged team. 

Explore Duo Careers

images of happy people in their work environment with one person wearing Duo branded socks

Ready to experience our effective, easy-to-use cybersecurity solution for yourself? Try Duo for free today.