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 4094 reference ratings
4.7/5.0 (4094)
  • 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 would recommend Duo to all admins considering deploying two­-factor authentication for their applications. Duo’s approach of providing access based on user and device health is perfectly aligned with the threats organizations face from attackers targeting users and their devices.”

  • "I would highly recommend Duo Security to any company that is interested in multi-factor authentication. In fact, if you’re not doing multi-factor authentication today. I think you’re short changing yourself."

  • “Deploying Duo across our systems is one of the most successful things we've done to improve our security over last three years. We were never concerned about the usability element as we knew people like it and are using it.”

Featured Case Studies

  • Softwire - Customer Case Study

  • Duo Security for Insurance Provider Generali Biztosito

  • A Dublin-based managed service provider uses Duo to protect workers and data through a zero trust security approach

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.