About Duo Security
Duo Security is a Technology company based in Ann Arbor (United States) founded in 2010 by Dug Song, and was acquired by Cisco in August 2018. SSO and MFA-based IAM solutions are provided for security. It operates on a SaaS (Software-as-a-Service) and Subscription Services model. Duo Security has raised $120 million across 8 funding rounds from investors including Cisco, FJ Labs and Cisco Investments. The company has 434 employees. Duo Security was last valued at $1.8 billion in October 2018. Its website duo.com draws about 1.1 million monthly visits. Duo Security offers products and services including Duo Directory, Multi-Factor Authentication (MFA), Single Sign-On (SSO), Passwordless, and Cisco Identity Intelligence. Its focus areas include Cybersecurity and Identity and Access Management. Its legal entity is Cisco Systems, Inc. Its competitors include Okta, Ping Identity and JumpCloud; 3 of its 3 listed competitors have raised funding.
Company details
Comprehensive identity security solutions are offered by Duo Security, focusing on multi-factor authentication (MFA), single sign-on (SSO), and phishing-resistant technologies. Services are tailored for small to medium businesses, enterprises, government entities, and managed service providers. Coverage spans industries such as higher education, finance, healthcare, and technology. Solutions like Duo Directory and Cisco Identity Intelligence are designed to ensure secure access management and threat detection. Zero trust security and compliance solutions are also integrated to address modern cybersecurity challenges across diverse organizational needs.
- Headquarters Ann Arbor, United States
- Employees 434
- Founders Dug Song
- Stage Acquired
- SectorsTechnology
- Website category Computers Electronics and Technology · Computer Security
- Phoneβ’β’β’β’ β’β’β’β’
- Website duo.com
- Social LinkedIn X Facebook Instagram
- Acquired by Cisco (Aug 2018)
- Legal Name Cisco Systems, Inc.
Products & Services of Duo Security
Duo Security offers a comprehensive portfolio of products and services, including Duo Directory, Multi-Factor Authentication (MFA), Single Sign-On (SSO), Passwordless, and Cisco Identity Intelligence.
Identity management solution for secure access is provided.
Enhanced security through multiple authentication methods is ensured.
Seamless access to multiple applications is facilitated here.
Secure login without passwords is enabled for users.
Threat detection and response capabilities are offered comprehensively.
Apps and channels of Duo Security
Duo Security publishes 2 mobile apps with over 10M+ downloads.
Funding Insights of Duo Security
Duo Security has successfully raised a total of $120M across 8 strategic funding rounds. The most recent funding activity was a Series D round of $70 million completed in October 2017. This substantial capital infusion reflects strong investor confidence in the company's business model, growth potential, and market opportunities. The funding enables strategic expansion, product development, market penetration, and operational scaling to drive long-term value creation and competitive advantage.
- Total Funding $120M
- Total Rounds 8
- Last Round Series D β $70M
- First Round $1M
(Aug 2010)
- Investors Count 20
All 8 funding rounds of Duo Security with amounts and investors; the two latest post-money valuations are shown, the rest are part of the premium plan.
| Date | Amount | Transaction Name | Valuation | Lead Investors | Investors |
|---|---|---|---|---|---|
| Oct 2017 | $70M | Series D | $1.17B | Meritech, Lead Edge Capital | |
| Apr 2015 | $30M | Series C | β | Redpoint Ventures | |
| Sep 2014 | $12M | Series B | β | β | |
| Aug 2013 | $999,997 | Series A | β | β | β |
| Feb 2012 | $6M | Series A | β | β | |
| Feb 2012 | $5M | Series A | β | Google Ventures | |
| Aug 2010 | $1M | Seed | β | β | |
| Aug 2010 | $1M | Seed | β | β |
| Date | Valuation | Stage |
|---|---|---|
| Oct 2017 | $1.17B | β’β’β’β’β’β’β’β’ |
Last known valuation $1.8B (Oct 2018). 20 investors in total: 20 institutional.
Investors in Duo Security
Duo Security has secured backing from 20 investors, including venture fund and institutional investors. Prominent investors backing the company include Cisco, FJ Labs and Cisco Investments.
| Investor | Description | Founded Year | Domain | Location |
|---|---|---|---|---|
Private equity investments are directed toward US-based companies. | meritechcapital.com | Palo Alto, United States | ||
Growth-stage tech investments are targeted in the US and Japan. | geodesiccap.com | Foster City, United States | ||
Venture capital investments in technology startups and entrepreneurs. | indexventures.com | |||
Redpoint Ventures is engaged in venture capital investments. | redpoint.com | Woodside, United States | ||
Venture capital firm supporting AI founders through investments and community. | trueventures.com | |||
Canadian private equity investments are managed by Radar Capital. | radarcapital.ca | Toronto, Canada | ||
Corporate backed venture capital fund investing in multiple sectors | gv.com | Mountain View, United States | ||
US tech ventures are invested in by Resonant Venture Partners. | resonantvc.com | Ann Arbor, United States | ||
Early to growth-stage firms are invested in by Workday Ventures. | ventures.workday.com | San Francisco, United States | ||
Lead Edge Capital is focused on growth equity investments in technology. | leadedge.com | New York, United States |
Investor details for Duo Security
The complete investor list, round-by-round participation and investor portfolios require an active premium plan.
- Complete investor list
- Round participation
- Investor portfolios
- Co-investor network
Verified entity values are shown only after access is granted.
People of Duo Security
1005 people are tracked at Duo Security (398 in leadership, 10 in board & advisors, 597 in team); the tracked headcount is 434.
| Name | Role | Group |
|---|---|---|
Dug Song | Founder | Leadership |
Girish Parekh | SVP, CFO Global Sales & Marketing | Leadership |
Oliver Tuszik | EVP, Global Sales and Chief Sales Officer | Leadership |
Liz Centoni | EVP & Chief Customer Officer | Leadership |
Joshua Merrill | Chief Technical Architect | Leadership |
Aman Singh | Senior Director, Supply Chain | Leadership |
Dejana Stankovic | Director, Web AI Experiences | Leadership |
Torunn Bækken | Business Development Manager/ Financial Sales Specialist/partner Account Manager | Leadership |
Nirav P Shroff | Vice President, Business Development / Strategic Partnerships | Leadership |
Alan Love | Vp, Global Revenue Operations Leader | Leadership |
Zainab Mayungbe | Director Of Product Management | Leadership |
Joe Fenner | Director, Product Marketing | Leadership |
Ted Tsortos | Director, Sales Strategy & Planning (global Sales) | Leadership |
Scott Sprinkle | Senior Director, Solutions Engineering GES Central Area At Cisco Systems | Leadership |
Phil Wolfenden | Vice President Customer Experience | Leadership |
Vukota Pekovic | General Manager Cisco Silicon One R&d Center Serbia | Leadership |
Alice Qi | Director, Partner Sales & Business Development | Leadership |
Przemyslaw Kania | Vice President, Service Provider – EMEA | Leadership |
Amy Quick | Partner Development & Enablement | Leadership |
Leo Lian | Senior Director, Business Transformation | Leadership |
985 more people are available in the full profile.
Complete people profiles for Duo Security
Full employee and board profiles, team structure, tenure and professional contact details require an active premium plan.
- Full employee list
- Team structure
- Board tenure
- Professional contacts
Verified entity values are shown only after access is granted.
Timeline of Duo Security
5 dated milestones of Duo Security across 8 years, from founding to its latest funding, stage changes and deals.
- Founded Duo Security is founded.
- Funding First funding round of $1.0M.
- Funding Latest funding round, Series D, of $70.0M.
- Milestone Reaches Unicorn status.
- Exit Acquired by Cisco.
Competitors of Duo Security
Duo Security has 3 listed competitors in our database, 3 of them funded. They include Okta, Ping Identity and JumpCloud.
| Company Name | Domain | Founded | HQ Location | Total funding | Employees | Description |
|---|---|---|---|---|---|---|
| okta.com | 2009 | San Francisco, United States | $228.5M | 5,908 | Cloud-based identity management and authentication are provided for enterprises. | |
| pingidentity.com | 2002 | Denver, United States | $136.89M | 821 | Cloud-based identity management solutions are provided for enterprises. | |
| jumpcloud.com | 2012 | Boulder, United States | $408.43M | 220 | Cloud-based directory management for user and IT authentication is provided. |
Detailed competitors of Duo Security
The full competitor set, operating metrics and side-by-side benchmarks require an active premium plan.
- Full competitor set
- Operating metrics
- Benchmarks
- Competitive positioning
Verified entity values are shown only after access is granted.
Web traffic of Duo Security
The website of Duo Security (duo.com) receives about 1.1M visits a month and ranks #67,137 among all websites worldwide, #7,972 in Computer Security.
- Monthly visits1.1M
▲ 19.9% vs previous month
- Unique visitors488.5K
per month
- Global rank#67,137
among all websites
- Category rank#7,972
Computers Electronics and Technology · Computer Security
- Bounce rate52%
- Pages per visit2.0
- Average visit59 sec
- DevicesDesktop 48% Β· Mobile 52%
Websites whose visitors overlap most with Duo Security. Affinity shows how closely the audiences match.
| Website | Domain | Audience affinity | Monthly visits | Global rank | Profile |
|---|---|---|---|---|---|
| sailpoint.com | 100% | 623.3K | #80,056 | View details | |
| sonicwall.com | 100% | 532.3K | #81,443 | View details | |
| cloudflare.com | 99% | 37.5M | #887 | View details | |
| itarian.com | 98% | 374.8K | #157,099 | View details | |
| ninjaone.com | 98% | 1.4M | #51,894 | View details | |
| β’β’β’β’β’β’β’β’β’β’ | β’β’β’β’β’β’.com | β’β’% | β’.β’M | #β’β’β’β’β’ | β |
| β’β’β’β’β’β’β’β’β’β’ | β’β’β’β’β’β’.com | β’β’% | β’.β’M | #β’β’β’β’β’ | β |
| β’β’β’β’β’β’β’β’β’β’ | β’β’β’β’β’β’.com | β’β’% | β’.β’M | #β’β’β’β’β’ | β |
All 40 similar websites and full traffic analytics for Duo Security
The complete similar-websites list, audience overlap and engagement analytics require an active premium plan.
- 40 similar websites
- Audience overlap
- Engagement analytics
- Traffic by brand
Verified entity values are shown only after access is granted.
Top companies in Cybersecurity & Data Protection
3 companies that operate in the same segment as Duo Security (Cybersecurity & Data Protection) in United States, ranked by their profile score on The Company Check.
| Company | Description | Founded | Location | Total funding | Revenue | Employees |
|---|---|---|---|---|---|---|
Cloud based website security solutions | 2009 | San Francisco, California, United States | USD 332.1 M | USD 1.67 B | 7,330 | |
Cybersecurity and zero trust solutions are delivered for secure networks. | 2007 | San Jose, California, United States | USD 148 M | USD 3.35 B | 9,616 | |
Cloud-based identity management solutions are provided for enterprises. | 2002 | Denver, Colorado, United States | USD 136.89 M | USD 36.94 M | 821 |
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Related news about Duo Security
Complete news archive for Duo Security
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- Full article archive
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- Older coverage
- Brand-specific news history
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Frequently Asked Questions about Duo Security
Duo Security was founded in 2010.
Duo Security is headquartered in Ann Arbor, United States. It is registered at Ann Arbor, Michigan, United States.
Duo Security is a funded company, having raised a total of $120M across 8 funding rounds to date. The company's 1st funding round was a Seed of $1M, raised on Aug 2010.
Duo Security has 434 employees.
Comprehensive identity security solutions are offered by Duo Security, focusing on multi-factor authentication (MFA), single sign-on (SSO), and phishing-resistant technologies. Services are tailored for small to medium businesses, enterprises, government entities, and managed service providers. Coverage spans industries such as higher education, finance, healthcare, and technology. Solutions like Duo Directory and Cisco Identity Intelligence are designed to ensure secure access management and threat detection. Zero trust security and compliance solutions are also integrated to address modern cybersecurity challenges across diverse organizational needs.
Duo Security's top competitors include Ping Identity, Okta and JumpCloud.
Duo Security offers Duo Directory, Multi-Factor Authentication (MFA), Single Sign-On (SSO), Passwordless, and Cisco Identity Intelligence.
Duo Security has 20 investors. Key investors include Cisco, FJ Labs, Cisco Investments, Meritech Capital, and Geodesic Capital.
The valuation of Duo Security is $1.8B as of Oct 2018.
Duo Security operates through Cisco Systems, Inc..
Yes. Duo Security was acquired by Cisco in August 2018.
Yes. Duo Security publishes Duo Mobile and 1 more app, with over 10 million downloads.

