Case Study: Chicago Stock Exchange achieves 99% spam reduction and strengthened email & DNS security with Guardian Digital EnGarde Cloud Email Security

Secure Messaging, Comprehensive Support for Global Trading, Securities Firm

Chicago Stock Exchange needed a highly secure, easy-to-manage platform to deliver enterprise email and DNS services under strict uptime and security requirements. After evaluating alternatives, the exchange chose Guardian Digital and its EnGarde Cloud Email Security offering to meet challenges including DNS security, email phishing, limited tolerance for downtime, and the need for centralized management.

Guardian Digital implemented three EnGarde cloud instances for email and DNS, provided managed services and a comprehensive GUI on a Linux platform, and handled patching and updates. The deployment cut spam by 99%, delivered DNS threat protection, prevented network intrusions, improved user productivity and remote access, and simplified maintenance and support — demonstrating Guardian Digital’s measurable impact on CHX’s security posture and operations.

Chicago Stock Exchange

Dave Coder

Network Services Manager