Duo Security

Premium
Read 134 Duo Security reviews and testimonials from customers, explore 103 case studies and customer success stories, and watch 19 customer videos to see why companies chose Duo Security as their Network Security Software

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.

Show more
  • 134 Testimonials View
  • 103 Case Studies View
  • 19 Customer Videos View
Customer Rating Review Score based on 4927 reference ratings
4.7/5.0 (4927)
  • Fall 2026 Market Leader Passwordless Authentication Software
  • Winter 2026 Market Leader Identity & Access Management Software

More from Duo Security

Featured Testimonials

  • “After testing a couple of options, Duo stood out like a Rolls Royce in comparison to a Mini. It’s a standout product that has the wow factor and - as …

  • “I decided to go with Cisco many years ago, before I was CIO, because Cisco was the only company that had a holistic, strategic approach to the technology problems that …

  • “I would absolutely recommend Duo to other companies. It’s easy and has a huge breadth of capability compared to other authentication vendors on the market.”

Featured Case Studies

  • RWS Moravia - Customer Case Study

  • How the Business Search and Review Website Protected Their VPNs and SSH …

  • True Religion Brand Jeans - Customer Case Study

Featured Customer Videos

Additional Duo Security Information & Resources

Read Duo Security Reviews, Testimonials & Customer References from 134 real Duo Security customers.

Browse Duo Security Case Studies, Customer Success Stories, & Customer References from 103 businesses that use Duo Security.

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