Greathorn
Greathorn provides comprehensive email security for Microsoft 365 and Google Workspace, integrating directly with cloud email platforms to block phishing, malware, and business email compromise before messages reach user inboxes. The solution also supports data loss prevention and compliance workflows, helping organizations meet regulatory requirements without changing user workflows.
- Cybersecurity
- Software Only
Funding
Funding not disclosed
Founders
Founder details are not available yet.
Product
Problem
Organizations using Microsoft 365 and Google Workspace face sophisticated email-borne threats including phishing, malware, and business email compromise that bypass built-in native protections. These attacks exploit the trust placed in cloud email platforms, often slipping past default security filters and reaching users' inboxes where they can cause significant financial and reputational damage.
Solution
Greathorn delivers comprehensive email security purpose-built for Microsoft 365 and Google Workspace, integrating directly with existing cloud email infrastructure to close protection gaps. The platform detects and blocks advanced threats before they land in users' inboxes, using layered defenses that address known and emerging attack vectors. Beyond threat prevention, Greathorn supports compliance workflows and data loss prevention, helping organizations meet regulatory requirements while safeguarding sensitive information. The solution operates transparently within the email environment, requiring no changes to user workflows or email configuration.
Target Audience
Primary customers are organizations that rely on Microsoft 365 or Google Workspace and need enhanced email threat protection beyond native platform defaults, including IT and security teams seeking integrated, cloud-native security controls.
Features
- Native integration with Microsoft 365 and Google Workspace cloud email platforms
- Advanced threat detection for phishing, malware, and business email compromise
- Pre-delivery filtering that blocks malicious messages before they reach user inboxes
- Data loss prevention capabilities to control sensitive information leaving the organization
- Compliance support to align email security controls with regulatory requirements