Cloud email security
Its email security safeguards cloud email against business email compromise, impersonations, credential theft, account takeover, and other phishing attacks.
Source: LinkedIn company description · Retrieved October 19, 2026
Company profilegreathorn.com ↗
Greathorn
GreatHorn provides email security intended to protect organizations before, during, and after phishing attacks.
- Headquarters
- Waltham, Massachusetts, United StatesSource: RevenueBaseRetrieved October 19, 2026
- Employee range
- 11 to 50Source: RevenueBaseRetrieved October 19, 2026
What does Greathorn do?
The company treats email security as a risk management function.
Based on the company’s public LinkedIn information, supplied through RevenueBase.
Who it serves
GreatHorn serves global companies.
Services & capabilities.
Response team tools
It provides response teams with tools to limit exposure and minimize risk.
Source: LinkedIn company description · Retrieved October 19, 2026
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No currently confirmed list appearances.
Company information
Sources & data notes.
RevenueBase prepared this profile from the company’s public LinkedIn information and RevenueBase company data. These source records were retrieved on October 19, 2026. AI helped summarize these sources, with a separate automated check against the source text completed on October 19, 2026. Directory positions use company-contact counts from separately saved list snapshots. How the company lists are built.
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