Duo Security
Track on RadarAcquired by Cisco · 2018 · news
Cloud-based MFA and identity access management platform for secure access
- Total raised
- $121.5M
- Employees
- 465
- Founded
- 2010
- Momentum
- 23
Stalling
Data updated August 2026
About
About Duo Security
At a glance
Duo Security is a cybersecurity company specializing in IAM, founded in 2010 and headquartered in Ann Arbor, United States. It has raised $121.5M in total funding, employs about 465 people, and was acquired by Cisco in 2018.
Duo Security is a cloud-based identity and access management provider that was founded in 2010 by Dug Song and Jon Oberheide in Ann Arbor, Michigan. The company was acquired by Cisco in 2018 and now operates as part of Cisco Security, serving over 40,000 customers across 100+ countries. Duo provides multi-factor authentication (MFA) and identity security solutions designed to verify user identities and assess device health before granting access to applications, data, and networks. The platform's core capabilities include phishing-resistant MFA, single sign-on (SSO), passwordless authentication, device trust, identity threat detection and response (ITDR), and identity security posture management (ISPM). Additional features include two-factor authentication, remote access controls, and adaptive access policies. The company's solutions support Zero Trust security strategies and are deployed across diverse industries including healthcare, higher education, manufacturing, technology, finance, and public sector organizations. Duo processes over 1.3 billion monthly user authentications globally. The platform integrates with various applications and systems, providing risk-based authentication that adapts to user behavior and context in real time. Duo's approach emphasizes user experience alongside security, aiming to minimize friction while maintaining strong protection against unauthorized access and phishing attacks.
Momentum
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Privately held
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FAQ
Frequently asked questions about Duo Security
When was Duo Security founded?▾
Duo Security was founded in 2010.
Where is Duo Security headquartered?▾
Duo Security is headquartered in Ann Arbor, United States.
How much funding has Duo Security raised?▾
Duo Security has raised a total of $121.5M in total funding.
Is Duo Security public or private?▾
Duo Security is a privately-held company.
How many employees does Duo Security have?▾
Duo Security has approximately 465 employees.
