
Duo Security
Provider of zero trust security and multi-factor authentication solutions for organizations.
About
Duo Security provides comprehensive identity security and multi-factor authentication (MFA) solutions, including identity and access management, phishing-resistant MFA, and identity intelligence. Their platform is designed to secure access for users and devices, protecting organizations from small businesses to enterprises and government entities. Duo aims to offer security-first IAM that is both effective against attackers and user-friendly.
Listed competitors
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Key facts
- Website
- duo.com
- Headquarters
- Ann Arbor, United States
- Founded
- 2010
- Employees
- 475
- Total funding
- $107M (Series C)
- Business model
- B2B
Duo Security pricing
| Plan | Price |
|---|---|
| FreeUp to 10 users, Strong MFA, Seamless integrations | $0 / month |
| EssentialsEverything in Free, plus Duo Directory, Phishing-resistant MFA, Complete passwordless authentication | $3 / month |
| AdvantageEverything in Essentials, plus Cisco Identity Intelligence with cross-identity visibility, ISPM and ITDR, Duo Passport, Session theft protection | $6 / month |
| PremierEverything in Advantage, plus complete Zero Trust access, VPN-less remote access to private resources via Duo Network Gateway, Complete device trust with endpoint protection check | $9 / month |
Prices per user per month. 30-day free trial available, activate in minutes, pay with credit card. For under 100 users licenses purchased in increments of 10, for over 100 users in increments of 25.
Plans as published by Duo Security, checked September 2026. Current prices on duo.com
Funding rounds
| Date | Round | Amount | Lead investors |
|---|---|---|---|
| 15 Sept 2015 | Series C | $72M | Meritech Capital Partners |
| 1 Apr 2014 | Series B | $22M | Jeff Dean |
| 19 Sept 2012 | Series A | $12M | True Ventures |
| 20 Jul 2011 | Seed | $1M | True Ventures |
Tech stack
Detected on duo.com, last scanned 29 Oct 2026. Run your own scan
- Compliance
- SOC 2, HIPAA, PCI DSS, GDPR
- Support
- Khoros
- CMS / Builders
- Salesforce
- CDN
- AWS CloudFront
- Hosting
- AWS
- Email provider
- Cisco IronPort, Google Workspace
- Email marketing
- Adobe Marketo
- Status page
- Statuspage
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Frequently asked
Is Duo Security trustworthy and reputable?
StartupHub's Data Trust & Reputation score for Duo Security is 95 out of 100, a trusted rating, based on site security posture, privacy practices, malware and phishing checks, and public reputation signals.
How much funding has Duo Security raised?
Duo Security has raised a total of $107M in funding. The most recent round on record is Series C.
How many employees does Duo Security have?
Duo Security has approximately 475 people on record.
SEC filings, insider activity, nonprofit links and pay benchmarks for Duo Security:
Company details: from public sources. Funding: no announced round on file. Ownership: not yet claimed by the company. Scores: measured by named tools; each links to its method. Our rules


