Last updated 2026-07-26
- Raised $3M Seed round, Nov 2006
- Raised Series A, Dec 2019
- Raised grant, Aug 2017
Total raised
$3.0M
Last: Undisclosed Round 2020-01
Stage
Mature
Founded
2007
Headcount
144
HQ
Rosh Haayin, Israel
Sector
Cyber Security
About
Waterfall Security Solutions is an industrial cybersecurity company that develops and deploys unidirectional security gateways. These hardware-enforced network devices implement a one-way data flow architecture, physically preventing bidirectional communication into critical operational technology (OT) networks. The company's technology is built on the data diode principle, allowing monitored data egress from OT networks to IT/cloud systems while making reverse network traversal physically impossible. Waterfall Security Solutions' products are used globally in national infrastructures, power plants, nuclear plants, oil & gas facilities, manufacturing plants, and utilities, helping to secure IT/OT integration, remote monitoring, and diagnostics without the vulnerabilities associated with firewalls.
Funding history · 3 rounds · $3.0M total
2019-12
A Round
Undisclosed
2017-08
Grant
Undisclosed
2006-11
Seed
$3.0M
Headcount over time
From 70 (2019-04) to 150 (2026-07) · +80 (+114%) · 21 points · source: Finder history + radar grounding
Q&A
- What is Waterfall Security Solutions' primary business?
- Waterfall Security Solutions is an industrial cybersecurity company that provides unidirectional security gateways for critical infrastructure and industrial control systems, implementing a one-way data flow architecture to prevent bidirectional communication into operational technology (OT) networks.
- How many employees does Waterfall Security Solutions currently have?
- Waterfall Security Solutions has 144 employees, falling within the 51-200 employee bucket.
- When was Waterfall Security Solutions founded?
- Waterfall Security Solutions was founded in 2007.
- What is the total amount of funding Waterfall Security Solutions has raised to date?
- Waterfall Security Solutions has raised a total of $37,000,000 USD.
- Which company did Waterfall Security Solutions partner with in September 2022 for cybersecurity?
- In September 2022, Waterfall Security Solutions announced a cybersecurity partnership with Alstom.
- What was a significant partnership announced by Waterfall Security Solutions in November 2021?
- In November 2021, Waterfall Security Solutions and HTSS collaborated to protect a large European power company.
- What was a key development for Waterfall Security Solutions in July 2024?
- In July 2024, Waterfall Security Solutions was working to solve the security challenge of remote operation for industrial networks.
- What was a notable project Waterfall Security Solutions secured in May 2022?
- In May 2022, Waterfall Security Solutions' Unidirectional Gateways were used to protect the natural gas interconnection between Poland and Lithuania.
Team · 2
Lior Frenkel
Founder · CEO and Co-Founder
Amir Zilberstein
Founder · Co-Founder
Sectors & technology
Primary sector
Cyber Security
Sub-sectors
Cyber SecurityIndustrial Security
Technologies
Platforms & InterfacesSoftware
Target customers
Industrial ManufacturingDiscrete IndustriesAerospaceDefense, Safety & SecurityNational SecurityMilitaryHealthcare & Life SciencesLife SciencesPharmaceuticalsFinancial ServicesFinancial ProductsInsuranceGovernment & CityMunicipalitiesEnergy, Utilities & Waste ManagementUtilities
Business model
B2GB2B
Highlights
1 PatentsVerified
Tags
network-securityscadaremote-monitoringtransportationcyber-securitycritical-infastructurehomeland-securityhardwareindustry-4-0electric-utilitiesmilitarywater-utilitiesaviationoil-and-gas-companiescontrol-systemsinsurance-companiesmanufacturing-facilitiespharma-companiesmunicipalitiessmart-mobilitytrainspublic-transportation
Full data — links, identifiers, deals & radar signals (jobs, patents, research, more)
External links
| Website | waterfall-security.com |
|---|---|
| linkedin.com/company/201558 | |
| facebook.com/WaterfallSolutions | |
| YouTube | youtube.com/channel/UCyx15KTpe8STzt1evQ6Qajw |
Identifiers & details
| Legal name | Waterfall Security Solutions Ltd. |
|---|---|
| Founded | 2007 |
| Employees (exact) | 144 |
| Offices | Chatswood; Abu Dhabi; Suresnes; Ashburn; Singapore |
Radar intelligence
Patents
| EPO | 15 |
|---|
Web history (Wayback)
| Domain | waterfall-security.com |
|---|
Israeli Companies Registrar (רשם החברות / ICA)
| Registrar # (ח.פ.) | 513905646 |
|---|---|
| Status | פעילה |
| Corp type | ישראלית חברה פרטית |
| Incorporated | 2006-12-18 |
| Purpose | לעסוק בכל עיסוק חוקי |
| Liability | מוגבלת |
| In violation (unfiled) | no |
| Last annual report | 2025 |
| Active charges / liens | 0 |
| Registry events | 3 — charge (2), shares_capital (1) |
| Registered address | המלאכה 14 ראש העין |
Recent registry events
| Date | Event |
|---|---|
| 2026-02-18 | רישום שעבוד |
| 2025-09-16 | הקצאת מניות |
| 2026-01-06 | סילוק שעבוד |