Duo Security is a company that provides security systems as cloud-based two-factor authentication to organizations. Its technology can be deployed to protect users, data, and applications from breaches, credential theft, and account takeover.

Employee Rating

Parent CompanyCisco
HQAnn Arbor, MI, US
Cybersecurity ratingBMore
Duo Security was founded in 2010 and is headquartered in Ann Arbor, MI, US
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Key People/Management at Duo Security

Dug Song

Dug Song

VP and General Manager, Cisco Co-Founder, Duo Security
Brian Verenkoff

Brian Verenkoff

Head of Technical Solutions Architects
Jon Oberheide

Jon Oberheide

Product CTO, Cisco Co-Founder and CTO, Duo Security
Brian Lindauer

Brian Lindauer

Director of Data Science and Engineering
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Duo Security Office Locations

Duo Security has offices in Ann Arbor, Austin, Detroit, San Francisco and in 4 other locations
Ann Arbor, MI, US (HQ)
123 N Ashley St
Austin, TX, US
804 Congress Ave
Detroit, MI, US
1420 Washington Blvd
San Francisco, CA, US
444 Townsend Street
London, GB
115 Houndsditch
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Duo Security Financials and Metrics

Summary Metrics

Founding Date


Total Funding

$121.5 m


In total, Duo Security had raised $121.5 m. Duo Security is a subsidiary of Cisco

Duo Security Operating Metrics

Y, 2014Y, 2015Y, 2016Feb, 2017Oct, 2017Y, 2017Feb, 2018Jan, 2022

Annual Recurring Revenue

$10 m$31 m$73 m$100 m





Paying Customers

8 k10 k10 k20 k
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Duo Security Cybersecurity Score

Cybersecurity ratingPremium dataset



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Duo Security Online and Social Media Presence

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Duo Security Company Culture

  • Overall Culture



  • CEO Rating



  • Compensation



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Duo Security Blogs

What Duo Unix Administrators Need to Know About Pluggable Authentication Modules

One common hurdle for systems administrators setting up new Duo Unix integrations is PAM — Pluggable Authentication Modules. With PAM, some advance planning will help prevent running into issues later on. That’s because modifying PAM incorrectly can lead to some serious problems, like bypassing Duo…

Announcing General Availability of Remote Desktop Protocol Support for Duo Network Gateway

A few months ago, Duo announced the public preview of Remote Desktop Protocol (RDP) for the Duo Network Gateway (DNG), and today we are happy to share that this capability is generally available for  Duo Beyond  customers. The DNG now allows users to access on-premises applications and desktops secu…

Modernizing Secure Remote Access for a Hybrid Workforce

Problem: The Traditional VPN Is No Longer EnoughSince the 1990s, virtual private networks (VPNs) have been well-suited for the purpose they were built for – to grant employees temporary access to corporate networks and resources when they weren't logging in from an office. While VPNs have since been…

Celebrating Women’s History Month: Women Senior Leaders from Duo Share Their Stories

At Duo, we celebrated Women’s History Month with a panel discussion on International Women’s Day, featuring women from Duo discussing the importance of challenging biases and misconceptions in pursuit of a more inclusive, gender-equitable world.The panel consisted of five women senior leaders from D…

Site Reliability Engineering Spotlight: Powering Our Platform to Support Our Customers

Duo Security is now part of the largest enterprise cybersecurity organization, Cisco Secure. We’re actively seeking both back-end and front-end developer and software engineering talent to help expand our reach even further. Duo’s Site Reliability Engineering (SRE) team is particularly experiencing …

5 Actions to Comply with NCSC’s New BYOD Rules

We recently explored in the blog the National Cyber Security Center’s (NCSC) newly revised Cyber Essentials scheme, and how its specific post-pandemic “Bring Your Own Device” policies have led to some publications labeling the change “BYOD 2.0.” The NCSC has provided a lot of guidance regarding what…
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Duo Security Frequently Asked Questions

  • When was Duo Security founded?

    Duo Security was founded in 2010.

  • Who are Duo Security key executives?

    Duo Security's key executives are Dug Song, Brian Verenkoff and Jon Oberheide.

  • How many employees does Duo Security have?

    Duo Security has 706 employees.

  • Who are Duo Security competitors?

    Competitors of Duo Security include OneLogin, Cybereason and Feitian.

  • Where is Duo Security headquarters?

    Duo Security headquarters is located at 123 N Ashley St, Ann Arbor.

  • Where are Duo Security offices?

    Duo Security has offices in Ann Arbor, Austin, Detroit, San Francisco and in 4 other locations.

  • How many offices does Duo Security have?

    Duo Security has 8 offices.