Company lists · Data refreshed September 2026

Top 25 Network security software companies based in the United States

RevenueBase identified 337 network security software companies headquartered in the United States as of September 2026 and tracks 35,628 professional contacts across them, including 14,058 with verified work emails and 7,012 with mobile numbers. New York is the largest hub.

This list covers network security software companies headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, how directly it supports the match, and when it was last checked. Data refreshed September 5, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row Match evidence on every row Refreshed Sep 5, 2026 86% judged on-target in blind review
337Companies
35,628Contacts tracked
14,058Verified emails
7,012Mobile numbers
Unlock all 337 companies Free signup · no credit card · 500 free credits

The 25 largest network security software companies based in the United States

Ranked by team size
Top 25 of 337 network security software companies based in the United States, ranked by team size, largest first. Data refreshed Sep 5, 2026. Evidence rates how directly each company's own description names network security software companies: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#CompanyHeadquartersEmployeesContacts
1
FortinetIndirect evidence
Sunnyvale, CA, United StatesHQ checked Sep 5, 202610001+14,289

“Fortinet makes possible a digital world that we can always trust through its mission to protect people, devices, and data everywhere.”

Source: company website · checked Sep 5, 2026
2
SymantecStrong evidence
San Jose, CA, United StatesHQ checked Sep 5, 202610001+11,169

“Your backstage pass to the most epic cybersecurity solutions on the market for Endpoint, Network, Data and Cloud security.”

Source: company website · checked Sep 5, 2026
3
InfobloxStrong evidence
Santa Clara, CA, United StatesHQ checked Sep 5, 20261,001-5,0002,813

“Infoblox unites networking and security to deliver unmatched performance and protection.”

Source: company website · checked Sep 5, 2026
4
Watchguard TechnologiesIndirect evidence
Seattle, WA, United StatesHQ checked Sep 5, 20261,001-5,0001,059

“WatchGuard® Technologies, Inc.”

Source: company website · checked Sep 5, 2026
5
NiksunIndirect evidence
Princeton, NJ, United StatesHQ checked Sep 5, 2026201-500276

“In the ever-growing world of Cloud Computing, Big Data and the Internet of Things, NIKSUN® is the industry leader in making the unknown known.”

Source: company website · checked Sep 5, 2026
6
Hirsch USAPartial evidence
Santa Ana, CA, United StatesHQ checked Sep 5, 2026201-500240

“Hirsch is a global leader in unified security solutions, helping enterprise and SMB organisations integrate perimeter security, intrusion detection, access control, video…”

Source: company website · checked Sep 5, 2026
7
Cujo AIPartial evidence
Covina, CA, United StatesHQ checked Sep 5, 2026201-500239

“CUJO AI® is the global leader of cutting-edge cybersecurity and network intelligence solutions that enable network operators globally to improve the digital life protection of…”

Source: company website · checked Sep 5, 2026
8
VeherePartial evidence
San Francisco, CA, United StatesHQ checked Sep 5, 2026201-500211

“Vehere is an AI cyber defense company operating at the intersection of national security and enterprise security.”

Source: company website · checked Sep 5, 2026
9
WebrootIndirect evidence
Broomfield, CO, United StatesHQ checked Sep 5, 2026501-1,000199

“Webroot, an OpenText company, was the first to harness the cloud and artificial intelligence to stop zero-day threats in real time.”

Source: company website · checked Sep 5, 2026
10
ESOFTStrong evidence
Broomfield, CO, United StatesHQ checked Sep 5, 202651-200141

“eSoft is a leader in providing Simply Better Network Security™ to businesses of nearly any size.”

Source: company website · checked Sep 5, 2026
11Alpharetta, GA, United StatesHQ checked Sep 5, 20261,001-5,000120

“With over 25 years of expertise, PDI Security and Network Solutions (formerly known as Nuspire) is redefining cybersecurity and network management through intelligent unification…”

Source: company website · checked Sep 5, 2026
12
Advanced Programs, INCIndirect evidence
Columbia, MD, United StatesHQ checked Sep 5, 202651-200102

“Embark on a mission with Advanced Programs, Inc,(API) – where innovation meets impact!”

Source: company website · checked Sep 5, 2026
13
JFL Consulting, LLCStrong evidence
Springfield, VA, United StatesHQ checked Sep 5, 202651-20065

“With more than twenty years of in-field work securing and assuring some of the Department of Defense and the Intelligence Community’s most critical networks, JFL Consulting…”

Source: company website · checked Sep 5, 2026
14
Sourcefire, Part Of CiscoIndirect evidence
Columbia, MD, United StatesHQ checked Sep 5, 2026501-1,00063

“Sourcefire, Inc.(Nasdaq:FIRE), a world leader in intelligent cybersecurity solutions, is transforming the way global mid- to large-size organizations and government agencies…”

Source: company website · checked Sep 5, 2026
15
firewalls.comIndirect evidence
Indianapolis, IN, United StatesHQ checked Sep 5, 202611-5043

“Firewalls.com offers cutting edge products and services designed to provide cost-effective IT solutions in the age of information.”

Source: company website · checked Sep 5, 2026
16
NLEPartial evidence
Orem, UT, United StatesHQ checked Sep 5, 202611-5042

“NLE is a Utah-based next generation cybersecurity firm providing integrated solutions and managed security services with local support and engineering.”

Source: company website · checked Sep 5, 2026
17
Western Nrg, INCPartial evidence
Camarillo, CA, United StatesHQ checked Sep 5, 202611-5035

“Western NRG provides Internet Security solutions to small and medium sized organizations throughout North America.”

Source: company website · checked Sep 5, 2026
18
ZecurionPartial evidence
New York, NY, United StatesHQ checked Sep 5, 202651-20034

“Established in 2001, Zecurion has emerged as a worldwide authority in IT security solutions, safeguarding the interests of more than corporate clients spanning across 70+…”

Source: company website · checked Sep 5, 2026
19Bountiful, UT, United StatesHQ checked Sep 5, 202651-20029

Network Consulting Services, inc.(NCSi) is a global IT Security and Storage company based in Salt Lake City, Utah.”

Source: company website · checked Sep 5, 2026
20
DatawayIndirect evidence
San Francisco, CA, United StatesHQ checked Sep 5, 202611-5028

“Dataway, Inc.”

Source: company website · checked Sep 5, 2026
21
Valyrian Systems INCIndirect evidence
Santa Clara, CA, United StatesHQ checked Sep 5, 202651-20028

“Valyrian System, Inc.”

Source: company website · checked Sep 5, 2026
22
Envoy Data CorporationPartial evidence
Scottsdale, AZ, United StatesHQ checked Sep 5, 202611-5026

“Founded in 1993, Envoy Data is a global network and cybersecurity solutions provider and integrator dedicated to understanding our customers’ needs and designing innovative…”

Source: company website · checked Sep 5, 2026
23Mesa, AZ, United StatesHQ checked Sep 5, 202611-5024

“Since our inception, our focus has always been to be the first and final line of defense between you, your team, and your users in the never ending perils of technology.”

Source: company website · checked Sep 5, 2026
24
DatapatrolStrong evidence
Washington, DC, United StatesHQ checked Sep 5, 202611-5024

“DataPatrol is a software company, specialized in providing Security and Privacy of company's data and information in an evolved way.”

Source: company website · checked Sep 5, 2026
25
Firewalla INCIndirect evidence
San Jose, CA, United StatesHQ checked Sep 5, 202611-5023

“Firewalla is dedicated to making accessible cybersecurity solutions that are simple, affordable, and powerful.”

Source: company website · checked Sep 5, 2026

Showing 25 of 337 network security software companies based in the United States

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Network security software companies based in the United States at a glance

As of Sep 5, 2026
1-10Median size (employees)
New YorkLargest hub · 8 HQs
7,012Contacts with mobile numbers
Sep 5, 2026Data refreshed

Companies by employee count

1-10
179
11-50
104
51-200
28
201-500
12
501-1,000
3
1,001-5,000
6
5,001-10,000
1
10001+
3

Verified emails by last verification

0–30
12,995
31–60
866
61–90
32
90–180
10
180+
155

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among network security software companies, so some rows will be adjacent to the category rather than pure plays. The description and evidence rating on every row are there so you can check each match yourself.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Companies headquartered in the United States whose own description of what they do matches “network security software companies”. Matching reads each company's description, not its industry code or its name.
What we exclude
Companies whose own description does not clearly place them among network security software companies, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
Match quality
In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and an evidence rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every listed company carries at least one verified work email, 14,058 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on September 5, 2026. Lists refresh periodically as the graph is re-checked.
Corrections
Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

How many network security software companies are there based in the United States?

RevenueBase identified 337 network security software companies headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Fortinet, headquartered in Sunnyvale, tops this list with the largest team on record.

Which city has the most network security software companies?

New York leads with 8 headquartered companies, followed by Austin (7) and San Jose (7).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 14,058 verified decision-maker contacts tracked across these 337 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 5, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.