GreatHorn

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GreatHorn is a cloud-native email security company founded in 2015 and based in Waltham, Massachusetts. The company specializes in protecting organizations from advanced email threats, including phishing, business email compromise, credential theft, and malware. GreatHorn offers a comprehensive email security platform designed for cloud-based email systems like Microsoft Office 365 and Google G Suite. The platform can be deployed quickly without affecting mail routing, ensuring seamless operation. The integrated platform provides protection across three stages: threat detection and prevention, post-delivery protection, and incident response. It utilizes machine learning and a patented threat detection engine to analyze risk factors and block various threats. GreatHorn also focuses on user empowerment through contextual alerts and security awareness tools. The company serves Global 2000 enterprises, particularly in finance, education, healthcare, and technology sectors, and has raised $19 million in funding to support its growth.