GreatHorn Continues Momentum with Record Growth in 2017

GreatHorn’s Cloud-Native Email Security Platform Provides the Anti-Phishing and Advanced Threat Capabilities Lacking in Legacy Email Gateway Technologies

Belmont, Mass., February 7, 2018 – GreatHorn, the leader in next-generation email security that protects enterprises from advanced threats, today announced that it has more than tripled its year-over-year sales growth rate and set a record pace of new customer acquisition. The company’s momentum reflects the growing organizational need for a cloud-native email security platform that protects Office 365 and G Suite users against advanced threats including targeted phishing attacks that go undetected by legacy email gateway security technology.

Main 2017 developments include:

  • GreatHorn added new customers across every industry, including financial services, healthcare, technology and education
  • Added multiple new Fortune 500 customers in the information technology services and pharmaceutical industries
  • Expanded employee headcount, including key additions to the management team
  • Issued more than 20 major software releases, providing significant new functionality and demonstrating continued innovation
  • Awarded finalist in the 2017 RSA Conference Innovation Sandbox for its disruptive approach to the email security market
  • Named a Cool Vendor in Gartner’s report, Cool Vendors in Cloud Security, 20171
  • Named by SC Media’s Reboot Awards for Top Leadership

GreatHorn Cloud-Based Email Security is a next-generation email security platform designed for today’s cloud email systems. Office 365 and Google G Suite require modern, cloud-native email security to protect against advanced threats – such as business email compromise, executive impersonation, and targeted phishing — which legacy email gateway technology is simply not designed to detect or prevent. Only GreatHorn protects against advanced threats targeting cloud email solutions without requiring changes to MX records or introducing email latency.

According to Gartner, “Security and risk management leaders overseeing network and gateway security should scrutinize SEG product capabilities for advanced threat defense and post-delivery protection, because these are the leading differentiators and most important selection criteria.”2

“GreatHorn helps us monitor and mitigate security threats by automatically screening email content, without materially impacting our normal workflows and productivity,” said Stephanie Holt, CFO, North Capital. “From day one, GreatHorn has greatly reduced our risk profile in our Gmail environment.”

“Enterprises face an increasingly difficult challenge in protecting themselves against highly sophisticated and targeted email-based attacks,” said Kevin O’Brien, CEO of GreatHorn. “GreatHorn has grown consistently since our inception. This past year was marked by several milestones that signal the need for a new, cloud-native, modern approach to email security for today’s cloud native technologies. Email security is not a new idea, but the mechanisms by which it is designed and implemented need to adapt in order to keep pace with today’s attackers.”

Additional Resources: review: GreatHorn Detects the Most Carefully Planned Email Attacks

1, Gartner, Cool Vendors in Cloud Security, 2017, Jay Heiser, Greg Young, Steve Riley, Neil MacDonald, 26 May 2017, ID: G00326827

2, Gartner, Market Guide for Secure Email Gateways, 2017, Neil Wynne, 3 May 2017 ID: G00320003

Gartner does not endorse any vendor, product or service depicted in its research publications, and does not advise technology users to select only those vendors with the highest ratings or other designation. Gartner research publications consist of the opinions of Gartner’s research organization and should not be construed as statements of fact. Gartner disclaims all warranties, expressed or implied, with respect to this research, including any warranties of merchantability or fitness for a particular purpose.

About GreatHorn

GreatHorn is the leader in next-generation email security that protects organizations using Office 365 and Google G Suite and from advanced threats, including targeted phishing attacks that leverage social engineering to compromise access to data, credentials, and financial resources. A cloud-native solution built on a foundation of machine learning and automation, GreatHorn delivers the industry’s most effective email security solution that can be deployed and operational in less than 5 minutes. With its proprietary dataset built from hundreds of millions of uniquely analyzed threats, GreatHorn combines the intelligence, fidelity and precision necessary to prevent attacks from becoming breaches.

For more information on the company, visit or you can follow GreatHorn on LinkedIn or Twitter.

Get Your FREE Email Threat Assessment

Learn what advanced threats are currently getting through your existing email security and into your end users’ mailboxes.