Hello, we're GreatHorn

GreatHorn is the cybersecurity solution for cloud communication platforms. The company’s flagship product is the only solution that can automatically detect and remediate targeted social engineering attacks in today’s leading communication systems, including Google Apps, Office 365 and Slack.

Why Work with Us?

We are a highly experienced team with multiple successful startups under our belts and a data-driven approach to defining and solving problems. We’re serious about fostering a “no a**holes” culture.
We are


Collaborative &


We're Hiring


Where we are

Our offices are within walking distance of the Belmont Center MBTA stop, with plenty of on-street parking and easy access to public transportation.
116 Beech Street, Belmont, MA 02478
Jobs at GreatHorn1 open job
Developer + Engineer
Belmont, MA

Our funding history

  • $2.3M in Funding
    Investors: ff Venture Capital, RRE Ventures, Walter Winshall, SoftTech VC, Techstars Ventures, Zelkova Ventures, v1 vc
  • $0.3M in Funding
    Investors: Techstars, Zelkova Ventures, v1 vc, Right Side Capital Management
  • $6.3M in Funding
    Investors: Techstars Venture Capital Fund, .406 Ventures, ff Venture Capital, SoftTech Ventures, RRE Ventures
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