Duo Security

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Read 123 Duo Security reviews and testimonials from customers, explore 93 case studies and customer success stories, and watch 19 customer videos to see why companies chose Duo Security as their Network + Endpoint Security

Duo Security is a cloud-based access security provider protecting the world’s fastest-growing and largest companies and thousands of organizations worldwide, including Box, Etsy, Facebook, K-Swiss, The Men’s Wearhouse, NASA, Palantir, Paramount Pictures, Random House, Toyota, TripAdvisor Twitter, Yelp, Zillow, and more. Duo Security’s innovative and easy-to-use technology can be quickly deployed to protect users, data, and applications from breaches, credential theft and account takeover. Duo Security is backed by Benchmark, Google Ventures, Radar Partners, Redpoint Ventures and True Ventures.

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Customer Rating Review Scorebased on 4177 reference ratings
4.7/5.0 (4177)
  • Market Leader 2025 2025
    Winter 2025Market LeaderIdentity & Access Management Software
  • Market Leader 2024 2024
    Fall 2024Market LeaderPasswordless Authentication Software

More from Duo Security

Featured Testimonials

  • "Before Duo, we had hundreds, if not thousands of attempts to compromise user accounts almost daily. Since implementing Duo, we don’t see it as much. Not only is Duo a second line of defense but it also scares the attackers off."

  • “Duo’s Trusted Endpoints feature increases the security posture of our organization.”

  • "Utilizing Duo’s SSO, employee authentication to cloud assets is streamlined and secure."

Featured Case Studies

  • How the Online Ticketing Service Deployed Duo to Meet PCI DSS Compliance and Enhance Their Security Profile

  • With Duo Access edition, Optimax was able to implement a streamlined security solution to meet compliance requirements for access control and authentication

  • Bolton & Wigan Council ICT Partnership - Customer Case Study

Featured Customer Videos

Additional Duo Security Information & Resources

Read Duo Security Reviews, Testimonials & Customer References from 123 real Duo Security customers.

Browse Duo Security Case Studies, Customer Success Stories, & Customer References from 93 businesses that use Duo Security.

Watch Duo Security Customer Videos to learn why 19 businesses chose Duo Security.