Duo Security

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Read 126 Duo Security reviews and testimonials from customers, explore 95 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 4268 reference ratings
4.7/5.0 (4268)
  • 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

  • "Duo Push works so well. You literally just feel your phone vibrate and you log right in with Duo Push."

  • "Depending on the application and risk context, the university has enforced Duo’s adaptive access policies, such as ensuring that authenticator devices have screen lock enabled, allowing different authentication methods based on the needs of each department, enabling “Remember Me” device policies for specific applications and checking every device that enters the network."

  • "Duo is a part of a larger umbrella of data security against brute force attacks, phishing and so much more out there. Our team found Duo to be one of the best products we have worked with so far. The speed and ease with which we deployed the solution was particularly impressive."

Featured Case Studies

  • Interactive Intelligence - Customer Case Study

  • Tajco - Customer Case Study

  • Enfo - Customer Case Study

Featured Customer Videos

Additional Duo Security Information & Resources

Read Duo Security Reviews, Testimonials & Customer References from 126 real Duo Security customers.

Browse Duo Security Case Studies, Customer Success Stories, & Customer References from 95 businesses that use Duo Security.

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