GreatHorn

GreatHorn Employee Directory

Computer and Network SecurityUnited States11-50 Employees

Global 2000 companies use GreatHorn to reduce the inherent and pervasive risk associated with the everyday use of email. GreatHorn’s multi-staged approach to email security automatically combines data science, machine learning techniques, and technical analysis with human context to protect organizations before, during, and after a phishing attack.

By treating email security as a risk management function, customers can not only detect and remove more attacks but also warn users in real-time of potential threats and provide response teams with the tools to limit exposure and minimize risk. As a result, GreatHorn Email Security safeguards cloud email from advanced threats such as business email compromise, impersonations, credential theft, account takeover, and other phishing attacks.

More information can be found at http://www.greathorn.com

Find GreatHorn employees' phone numbers or email addresses

GreatHorn Global Highlights

Location
Employees

North America
45

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  • United States Of America
    44
  • Dominican Republic
    1

GreatHorn's Leadership

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    K. O.
    Chief Executive Officer And Co-Founder
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    K. O.
    Chief Executive Officer & Co-Founder
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    K. O.
    Chairman
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    J. R.
    Company Owner
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    J. M.
    Ceo
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    J. L.
    Executive Vice President Engineering
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    C. B.
    Director Of Software Development
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    J. A.
    Director, Customer Success
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GreatHorn Employee Metrics

100%
50%
0%
2025
2024
  • Engineering
  • Customer Success
  • Sales
  • Analytics
  • Marketing
  • Other

Contact profiles from GreatHorn

Name
Title
Contact Info
Location
Last Update
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    E. W.
    Solutions Engineer
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    Oct 21, 2024
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    H. H.
    Marketing Coordinator
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    Nov 04, 2025
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    J. Q.
    Account Executive
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    Oct 23, 2024
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    J. J.
    Account Executive
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    United StatesMassachusetts
    Jul 08, 2024
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    M. F.
    Business Development Representative
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    Oct 22, 2024
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    P. C.
    Enterprise Account Executive
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    UNITED STATES
    Aug 04, 2023
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    R. R.
    Georgia Institute Of Technology
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    United StatesFlorida
    Oct 21, 2024
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    S. M.
    Content Marketing
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    United StatesMassachusetts
    Jul 28, 2024
  • Stylized image of a person
    J. C.
    Phone icon
    UNITED STATES
    Jul 09, 2024
  • Stylized image of a person
    S. W.
    Phone icon
    UNITED STATES
    Jun 16, 2025

Frequently Asked Questions

What is GreatHorn known for?

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GreatHorn operates in the Computer and Network Security industry. The company's main headquarters is located in 1075 Main St, Suite 210 Waltham, Massachusetts 02451, US; you can contact the main corporate office by phone at . Explore GreatHorn's company overview page for more information.

What is GreatHorn's most common email format?

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GreatHorn employees' email format typically follows the pattern of . Trying to find reliable and up-to-date employee contact data? Find more GreatHorn email formats with LeadIQ.

How many employees does GreatHorn have currently?

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GreatHorn has approximately 11 employees as of October 2025. These team members are located across 1 continents, including North America.

Who are GreatHorn's key employees and leadership?

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As of October 2025, GreatHorn's key employees include:

  • Chief Executive Officer And Co-Founder: K. O.
  • Chief Executive Officer & Co-Founder: K. O.
  • Chairman: K. O.
  • Company Owner: J. R.
  • Ceo: J. M.

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