GreatHorn vs SlashNext
GreatHorn
Providing cloud email protection through advanced threat detection, automated defense, and integrated incident response since 2015
11 employees · est. 2015 · Waltham, United States
SlashNext
The Leader in AI-Powered Cloud Email, Mobile, and Browser Messaging Security
161 employees · est. 2017 · Pleasanton, United States
GreatHorn is the older company (2015 vs 2017); SlashNext is the larger of the two.
Side-by-Side Comparison
| Metric | GreatHorn | SlashNext |
|---|---|---|
| Founded | ||
| Founded | 2015 older | 2017 |
| Headquarters | ||
| Headquarters | Waltham, United States | Pleasanton, United States |
| Employees | ||
| Employees | 11 | 161 larger |
| Industry | ||
| Industry | Cyber Security, Hardware, Internet | Cyber Security, Privacy and Security |
| Funding Stage | ||
| Funding Stage | Venture round | Series B |
| Total Funding | ||
| Total Funding | $21.93M | $40.50M |
| Funding Rounds | ||
| Funding Rounds | 5 | 3 |
| Taxonomy | ||
| Taxonomy | Cloud SecurityEmail SecurityInformation SecurityPredictive SecuritySpear PhishingCredential Theft +4 | Cloud SecurityEmail SecurityMobile SecurityBrowser SecurityBECSmishing +7 |
| Website | ||
| Website | greathorn.com | slashnext.com |
About GreatHorn
GreatHorn, a cyber security startup established in 2015, offers cloud email protection with advanced threat detection, automated defense, and integrated incident response. The company's approach combines data science, machine learning, and technical analysis with human context to protect organizatio...
About SlashNext
SlashNext is a cyber security startup founded in 2017 and based in the United States. The company's slogan, "The Leader in AI-Powered Cloud Email, Mobile, and Browser Messaging Security," reflects its core focus of providing integrated cloud messaging security solutions for email, mobile, and browse...
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Compiled from the BounceWatch company index. We last looked at GreatHorn on 3 Mar 2025, and SlashNext on 12 Sep 2024. Where a field is blank here, it means we have not recorded it — not that the answer is zero. How we source and date this.
