GreatHorn
OverviewSuggest Edit
GreatHorn develops a cyber security platform designed to prevent phishing attacks for cloud-based communication platforms. The Company's platform provides enterprises with comprehensive, cloud-native protection against message-based threats, driven by machine learning and automated response capabilities, enabling organizations to secure their communications across multiple channels.
| Type | Private | |
| Founded | 2015 | |
| HQ | Waltham, MA, US | Map |
| Website | greathorn.com | |
| Employee Ratings | More |
Latest Updates
| Employees (est.) (Sept 2021) | 50 | |
| Cybersecurity rating | B | More |
Key People/Management at GreatHorn
Kevin O'Brien
CEO & Co-Founder
Raymond Wallace
CTO and Co-Founder
James Luciani
Vice President, Engineering
Michael Mayer
Vice President, Sales
Ann Sharon
Vice President, Operations
Matt Petrosky
Vice President, Customer Experience
GreatHorn Office Locations
GreatHorn has an office in Waltham
Waltham, MA, US (HQ)
260 Charles St #300
Waltham, MA, US
1075 Main St #210
GreatHorn Financials and Metrics
Summary Metrics
Founding Date | 2015 |
GreatHorn total Funding | $21.8 m |
GreatHorn latest funding size | $13 m |
Time since last funding | 2 years ago |
GreatHorn investors | Uncork Capital, Techstars, Zelkova Ventures, .406 Ventures, ff Venture Capital, RRE Ventures, Right Side Capital Management, Walter Winshall, Techstars Ventures, v1.vc |
GreatHorn's latest funding round in June 2019 was reported to be $13 m. In total, GreatHorn has raised $21.8 m
GreatHorn Cybersecurity Score
GreatHorn Online and Social Media Presence
853 Twitter followers
GreatHorn has 853 Twitter Followers. The number of followers has decreased 0.3% month over month and decreased 1% quarter over quarter
GreatHorn's Trends
Twitter Engagement Stats for @greathorn
1.8k
Tweets
819
Following
853
Followers
13
Tweets last 30 days
1.3
Avg. likes per Tweet
76.9%
Tweets with engagement
GreatHorn News and Updates
June 27, 2019
Cloud email cybersecurity startup GreatHorn raises $13M
Cloud email cybersecurity startup GreatHorn Inc. today said it has raised $13 million in new funding to expand its existing services in email security. The Series B round was co-led by RRE Ventures and .406 Ventures and included Techstars Ventures, V1.VC and Uncork Capital. Including the new fundin…
June 26, 2019
GreatHorn takes in $13 mln
Waltham, Massachusetts-based GreatHorn, an email security platform provider, has secured $13 million in funding. The lead investors were RRE Ventures and .406 Ventures.
June 26, 2019
GreatHorn nabs $13 million for cloud-hosted email security software
Cloud-hosted email security software provider Greathorn today announced that it has raised $13 million in venture capital.
February 22, 2019
GreatHorn Swoops In From The Cloud To Stop Phishing Attacks
GreatHorn has raised $10 million in venture capital and is in its third consecutive year of triple digit revenue growth, stopping phishing attacks from the cloud.
GreatHorn Blogs
August 11, 2021
Google and Open Redirects: Preventing Your Users from Becoming a Victim of Attacks
The GreatHorn Intelligence Team has identified an increase of 84% in phishing attacks leveraging Google’s open redirects using Google Meet and Google DoubleClick between Q1 2021 and Q2 2021. The use of the open redirects on these platforms allows for threat actors to evade detection by most email se…
July 28, 2021
Supply Chain Attacks: How to Defend Against Vendor Email Compromise
The GreatHorn Threat Intelligence Team, alongside hundreds of responses from IT security professionals, report 58% of organizations have experienced an attempted Supply Chain Attack in the past year. One of the largest attack techniques used in Supply Chain Attacks is a form of man-in-the-middle (Mi…
July 13, 2021
Bitcoin and Cryptocurrency: 2021 Email Extortion Trends
What are cryptocurrencies? Cryptocurrencies move over decentralized networks, with each computer (or “node”) that plugs into the network acting to validate transactions. That gives them the ability to facilitate transfers of money without a bank or money transmitter in between to say who gets to use…
June 02, 2021
OnlyScams: New GreatHorn Phishing Data Shows a Surge in X-Rated Attacks
Phishers exploit human nature, taking advantage of individuals, combining social psychology, technical systems, security subjects and politics. Call it what you will: business email compromise (BEC), phishing, spearphishing or whaling, all email-based cyberattacks have one thing in common: they use …
May 25, 2021
How Much Risk Is Already in Your Email Environment?
Today, most IT professionals understand that it’s impossible to stop every attack. That’s led to a more nuanced understanding of diagnosing and mitigating attacks at points inside and outside an organization’s security defenses. Email is no different. Roughly 306.4 billion emails are sent each day, …
April 28, 2021
Microsoft 365: You’ve Migrated, So What Can You Optimize?
Over the years, Microsoft has made its cloud offerings more attractive, motivating more and more businesses to make the migration from on-premise Microsoft Exchange email servers to cloud-hosted Microsoft 365. This includes improvements to email security functionality: features not available with Mi…
GreatHorn Frequently Asked Questions
When was GreatHorn founded?
GreatHorn was founded in 2015.
Who are GreatHorn key executives?
GreatHorn's key executives are Kevin O'Brien, Raymond Wallace and James Luciani.
How many employees does GreatHorn have?
GreatHorn has 50 employees.
Who are GreatHorn competitors?
Competitors of GreatHorn include Anjuna, Phylum and Exabeam.
Where is GreatHorn headquarters?
GreatHorn headquarters is located at 260 Charles St #300, Waltham.
Where are GreatHorn offices?
GreatHorn has an office in Waltham.
How many offices does GreatHorn have?
GreatHorn has 2 offices.
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