Duo Securityrevenue, acquisition & funding
Identity and Access Management (IAM) Software123 N Ashley St, Ann Arbor, MichiganFounded 2010
Duo Security was acquired.
Duo Security, now a part of Cisco, is a cybersecurity company that provides cloud-based access security and multi-factor authentication solutions. The company's solutions aim to protect against data breaches, phishing attacks, and other security threats.
Duo Security revenue
Duo Security's annual revenue was $57.2M in April 2021, its last figure before its buyer bought it (source not recorded).
| As of | Revenue | Source |
|---|---|---|
| Apr 2021 | $57.2M | – |
– source not recorded
Who owns Duo Security
Another company owns Duo Security. The date and price of the deal are not on record.
Duo Security funding rounds & investors
Duo Security has raised $121.5M across six rounds since 2010. The latest was a $70M Series D in October 2017.
| Date | Round | Raised | Valuation |
|---|---|---|---|
| Oct 2017 | Series D | $70M | $1.1B |
| Apr 2016 | Grant | $2.5M | – |
| Apr 2015 | Series C | $30M | – |
| Sep 2014 | Series B | $12M | – |
| Feb 2012 | Series A | $6M | – |
| Aug 2010 | Seed | $1M | – |
| Total raised | $121.5M |
Duo Security CEO & employees
Dug Song was CEO of Duo Security. Duo Security had 706 employees (July 2023).
- Dug SongCEO
All 2 headcount readings, with sources
| As of | Employees | Source |
|---|---|---|
| Jul 2023 | 706 | – |
| Apr 2021 | 681 | – |
Duo Security FAQ
What was Duo Security's revenue?
Before it was acquired, Duo Security's annual revenue was $57.2M in April 2021 (source not recorded).
How much funding has Duo Security raised?
Duo Security raised $121.5M across six funding rounds before it was acquired. The last was a $70M Series D in October 2017.
How many employees does Duo Security have?
Duo Security had 706 employees in July 2023.
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How this page is sourced
Founder figures link to the second they were said; public figures name their source; estimates are marked EST and say whose they are. Not financial advice.
Updated Oct 30, 2026Data disclaimerReport a correctionClaim this profileRun Duo Security? Join the podcast