Two-factor authentication for web applications

Protect your web applications from phishing attacks, account takeover, and data theft

Protect your Web Application

Protecting web logins and transactions with two-factor authentication is the best way to protect against today’s online threats. Duo Security allows you to efficiently and cost-effectively integrate two-factor authentication into your website or web application. Duo works with users’ phones and therefore is accessible to anyone.

How Duo Security's Two-Factor Authentication Works

Some web developers opt to make two-factor authentication mandatory, and add Duo’s inline self-enrollment to the registration process. Others make Duo Security an opt-in or premium-only feature. In either case, it only takes a few lines of code to add the self-enrollment and login prompt to your web application. Your users stay on your site while authenticating, which creates a consistent user experience.

Read the documentation »

Works for Everyone

The Duo Mobile smartphone application is free and available on all major smartphone platforms, and lets users easily generate passcodes without the cost and hassle of hardware tokens. iPhone, Android, Blackberry, and Windows Phone users can use Duo Push which “pushes” login or transaction details to the phone, allowing for immediate, one-tap approval. Watch the Duo Push demo »

Older devices like cellphones and landlines are also fully supported. Duo can send passcodes via text message, or place a phone call — users just press a button on their keypad to authenticate.

Duo Security Offers Multiple Methods for Two-Factor Authentication

Duo Security also sells and supports hardware tokens for users who prefer them. Hardware tokens can be ordered from the Billing section of the administrative interface.

Protect your Organization with Duo Security

  • Two-factor authentication done right
  • Simple setup and deployment
  • Works with all phones, even without cell service
  • Cost-effective, reliable, secure

Free 30-Day Trial  or  Contact Sales