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Draft:Duo Security
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Submission declined on 25 January 2026 by Meadowlark (talk).
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Comment: This company does not appear to meet the criteria set out in WP:NCORP; only routine business activities are described.Please see WP:42 for more information on what kind of sources you need to show that your subject qualifies for a Wikipedia article. Meadowlark (talk) 04:50, 25 January 2026 (UTC)
- Comment: Articles about funding rounds, partnerships, and other financial events are considered routine coverage, and do not indicate notability. Somepinkdude (talk) 19:18, 4 January 2026 (UTC)
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| Formerly | Duo Security LLC (2010–2018) |
|---|---|
| Company type | Subsidiary |
| Industry | Cybersecurity, Software |
| Founded | 2010 |
| Founders | Dug Song, Jon Oberheide |
| Headquarters | Ann Arbor, Michigan , United States |
Area served | Worldwide |
| Parent | Cisco Systems |
| Website | www |
Duo Security, Inc. is an American cybersecurity company that provides cloud-based access security, identity management, and multi-factor authentication (MFA) services. The company’s software verifies user identities and evaluates the security posture of their devices before granting access to applications. Duo Security is a wholly owned subsidiary of Cisco Systems, which agreed to acquire it in 2018 for US $2.35 billion.[1]
History
[edit]Duo Security was founded in 2010 by Dug Song and Jon Oberheide in Ann Arbor, Michigan.[2] In February 2012, Duo secured a $5 million funding round with contributions from Google Ventures, True Ventures, and Resonant Venture Partners.[3]
By 2016, Duo expanded beyond two-factor authentication (2FA), adding device-trust features and adaptive access policies within the emerging field of Zero Trust security. In February 2017, Duo released “Duo Beyond,” a commercial implementation of Google’s BeyondCorp security framework intended to extend its access security offerings beyond traditional two-factor authentication.[4]
In October 2017, Duo raised $70 million in a Series D funding round led by Meritech Capital Partners and Lead Edge Capital at a post-money valuation of approximately $1.17 billion, bringing the company’s total capital raised to about $119 million.[5]
In August 2018, Cisco announced its intent to acquire Duo Security for US $2.35 billion;[6] the acquisition closed on October 1, 2018, integrating Duo into Cisco’s Security Business Group as part of its broader Secure Access Service Edge (SASE) and Zero Trust strategy. [7] At the time of the Cisco transaction, TechCrunch reported Duo had about 700 employees and offices in the U.S. and London, while remaining headquartered in Ann Arbor.
In early 2021, Duo Security introduced infrastructure-agnostic passwordless authentication capabilities to enable users to log in without passwords using security keys or platform biometrics as part of its broader zero-trust security offerings.[8]
In October 2022, Dug Song, co-founder of Duo Security and then Cisco Security Chief Strategy Officer, left Cisco after four years with the company following its 2018 acquisition of Duo.[9]
In August 2023, Cisco’s Duo Security experienced a major authentication outage that lasted several hours and temporarily prevented some customers from accessing systems protected by Duo multi-factor authentication.[10]
In May 2025, Cisco expanded the Duo product line with the introduction of Duo Identity and Access Management (IAM), a broader identity and access management solution designed to address persistent identity-based security threats alongside existing authentication capabilities.[11]
Security and compliance
[edit]Duo’s platform applies Zero Trust principles, requiring continuous authentication and device validation across applications and endpoints. Duo outlines its operational practices and incident response framework on its public Security & Reliability page.[12] The company’s cloud service, achieved FedRAMP authorization for use in U.S. federal environments on November 15, 2019.[13]
By 2022, Duo Security began shifting its product strategy away from traditional "binary" authentication (simply granting or denying access) toward a "continuous verification" model designed to address the complexities of hybrid work environments.[14]
Products and services
[edit]Duo’s cloud-based platform helps organizations verify user identities and device health before granting access to applications. Key offerings include:
- Multi-Factor Authentication (MFA): supports verification via push notifications, passcodes, and platform authenticators.[15]
- Single Sign-On (SSO): enables centralized authentication to multiple applications.[16]
- Passwordless authentication: supports FIDO2/WebAuthn-based sign-in methods.[17]
See also
[edit]- Cisco Systems
- Zero trust architecture
- Multi-factor authentication
- Identity and access management
- Cybersecurity
References
[edit]- ^ "Cisco to buy cyber security company Duo for $2.35 billion". Reuters. August 2, 2018. Retrieved October 30, 2025.
- ^ "Change or be changed: An interview with Duo Security co-founders". Michigan Engineering News. University of Michigan. April 16, 2019. Retrieved October 30, 2025.
- ^ "Ann Arbor startup Duo Security lands $5 million from investment group including Google". The Ann Arbor News. February 28, 2012. Retrieved December 13, 2025.
- ^ "After more than doubling revenue, Duo Security looks 'Beyond' the firewall". TechCrunch. February 8, 2017. Retrieved December 13, 2025.
- ^ "Duo Security raises $70 million at a valuation north of $1 billion". TechCrunch. October 18, 2017. Retrieved December 13, 2025.
- ^ "Cisco is buying Duo Security for $2.35B in cash". TechCrunch. August 2, 2018. Retrieved October 30, 2025.
- ^ "Cisco Announces Completion of Acquisition of Duo Security" (Press release). Cisco Newsroom. October 1, 2018. Retrieved October 30, 2025.
- ^ "Cisco introduces infrastructure agnostic, passwordless authentication by Duo". Help Net Security. April 1, 2021. Retrieved December 13, 2025.
- ^ "Cisco Security Exec Exits". SDX Central. October 21, 2022. Retrieved December 13, 2025.
- ^ "Cisco's Duo Security suffers major authentication outage". The Register. August 21, 2023. Retrieved December 13, 2025.
- ^ "Cisco launches new identity access management products, services". SCWorld. May 28, 2025. Retrieved December 13, 2025.
- ^ "Security & Reliability for Trusted Access". Duo.com. Retrieved October 30, 2025.
- ^ "Duo Federal". FedRAMP Marketplace. U.S. General Services Administration. November 15, 2019. Retrieved October 30, 2025.
- ^ "Cisco's Ash Devata on the Future of Secure Access". Dark Reading. Informa TechTarget. June 15, 2022. Retrieved January 5, 2026.
- ^ "Duo Multi-Factor Authentication (MFA)". duo.com. Retrieved October 30, 2025.
- ^ "Duo Single Sign-On (SSO)". duo.com. Retrieved October 30, 2025.
- ^ "Duo Passwordless Authentication". duo.com. Retrieved October 30, 2025.
External links
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