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 4203 reference ratings
4.7/5.0 (4203)
  • 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

  • “We comply with state and federal mandates for Electronic Prescriptions of Controlled Substances by using Duo for two-factor authentication.”

  • "I think it’s a fantastic product. I think very highly of it. The ease of use for end users combined with the simple technical integration in the background makes it a big win for us."

  • “Security is often seen as a barrier by our users and it is important to us that we remove that barrier whilst preserving our security posture. Duo helps us to easily verify the identity of the user, ensures that they are logging in from the device we trust and accessing the information they are allowed to access. Duo is the partner we rely on in our journey towards a zero-trust model.”

Featured Case Studies

  • Hovione - Customer Case Study

  • RWS Moravia - Customer Case Study

  • A leading real-estate player in Europe uses Duo to secure their cloud-first approach and enable remote work for employees

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.