Encryption Technology

Secure Socket Layer technology helps to protect your Discover card account interactions. This makes it more difficult for an unauthorized person to view information about your account. View our SSL Certificate

System Protection

Discover card services are protected by encryption technology. We regularly test our security systems for weaknesses so we can create better security for you. Discover keeps an updated list of browser and operating systems to keep your computer running securely. To take advantage of SSL, we recommend you use an SSL-compatible browser.


Microsoft Internet Explorer 9 or newer available at www.microsoft.com/windows/Internet-explorer
Mozilla Firefox 15.0 or newer available at www.mozilla.com/firefox
Apple Safari 5.0 or newer available at www.apple.com/safari/download
Google Chrome 21.0 or newer available at www.google.com/intl/en/chrome/browser/


Apple Safari 6.0 or newer available at www.apple.com/safari/download
Mozilla Firefox 10.0 or newer available at www.mozilla.com/firefox

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Mobile App Security

When you're on the go, you deserve security that can keep up.

  • Our Discover Mobile apps use Secure Socket Layer technology
  • You'll be logged out after a period of inactivity
  • Only download the Discover Mobile app from a trusted source such as the App Store on the iPhone®, iPod touch®, Google Play on your Android™ or directly from the Discover.com Mobile page

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