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 4078 reference ratings
4.7/5.0 (4078)
  • 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

  • "I haven’t gotten a single complaint about it. Our overall experience with Duo has been extremely easy - that’s not something that always happens in the technology world."

  • "Duo has added a layer of security for connecting to our internal network as well as the email server. It gives control where needed to prevent brute force attacks simply based on username and password."

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

Featured Case Studies

  • Threadless - Customer Case Study

  • Ars Technica - Customer Case Study

  • Duo’s deployment enabled staff to securely access the TV station’s core Electronic Data Processing System (EDPS) to maintain business continuity from anywhere employees work

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.