Greathorn

GreatHorn is a new kind of security platform that prevents email based attacks by automatically helping recipients understand whether an email they just received is safe.
The Company plugs directly into today's major email providers like Google Apps and Office 365, and in realtime, analyzes every message for both externally observable indicators of threat as well as indicators that only GreatHorn can see. GreatHorn’s Policy Engine protects against common message-based attacks immediately upon deployment.