Company lists · Data refreshed September 2026

Top 25 Managed network security companies based in the United States

RevenueBase identified 1,523 company matches for managed network security companies associated with the United States as of September 2026 and tracks 41,801 professional contacts across them, including 14,613 with verified work emails. New York is the largest hub.

This list covers company matches for managed network security companies associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 28, 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 RevenueBase SmartSearch · Exact Recorded Sep 28, 2026 How this list was built
1,523Companies
41,801Contacts tracked
14,613Verified emails
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The 25 largest managed network security companies based in the United States

Ranked by team size
Top 25 of 1,523 company matches for managed network security companies based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 28, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchSan Jose, CA, United StatesHQ recorded Sep 28, 202610001+11,169 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
2Exact matchEden Prairie, MN, United StatesHQ recorded Sep 28, 20261,001-5,0003,145 contacts →

Exact match

“Every year new technologies, vendors, and solutions emerge-yet despite this constant innovation, high-profile breaches are all over the headlines.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
3Exact matchSanta Clara, CA, United StatesHQ recorded Sep 28, 20261,001-5,0002,813 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
4Exact matchSeattle, WA, United StatesHQ recorded Sep 28, 20261,001-5,0001,059 contacts →

Exact match

“WatchGuard® Technologies, Inc.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
5Exact matchChicago, IL, United StatesHQ recorded Sep 28, 2026501-1,000874 contacts →

Exact match

“Trustwave, a LevelBlue Company, is a globally recognized cybersecurity leader that reduces cyber risk and fortifies organizations against disruptive and damaging cyber threats.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
6Exact matchColumbia, MD, United StatesHQ recorded Sep 28, 2026501-1,000696 contacts →

Exact match

“Protect Your Endpoints, Identities, Logs, and Employees.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
7Exact matchMclean, VA, United StatesHQ recorded Sep 28, 2026501-1,000523 contacts →

Exact match

“UltraViolet Cyber is the only security operations partner that unifies red, blue, and purple team capabilities into one integrated program, finding what's vulnerable, stopping…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
8Exact matchMclean, VA, United StatesHQ recorded Sep 28, 2026501-1,000505 contacts →

Exact match

“At Ntiva, growing people (our employees, partners, and clients) is our mission.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
9Exact matchHouston, TX, United StatesHQ recorded Sep 28, 2026501-1,000450 contacts →

Exact match

“If you’re a midsize enterprise with employees (i.e, an “MSE” according to Gartner), we know what you’re going through.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
10Exact matchLas Vegas, NV, United StatesHQ recorded Sep 28, 2026201-500317 contacts →

Exact match

“Intelligent Technical Solutions is your trusted business partner for all your Cybersecurity, Managed and Co-managed IT support, Risk & Compliance, Data Analytics, and Consulting…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
11Exact matchBoston, MA, United StatesHQ recorded Sep 28, 2026201-500309 contacts →

Exact match

“Cynet’s unified, AI-powered cybersecurity platform brings together a full suite of security capabilities in a single, simple solution, backed by 24x7 SOC support.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
12Exact matchMiami, FL, United StatesHQ recorded Sep 28, 2026201-500295 contacts →

Exact match

“We are Cipher, a company from the Prosegur group specializing in Cybersecurity.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
13Exact matchPrinceton, NJ, United StatesHQ recorded Sep 28, 2026201-500276 contacts →

Exact match

“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.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
14Exact matchMckinney, TX, United StatesHQ recorded Sep 28, 2026201-500260 contacts →

Exact match

“Netrio is a full-service managed service provider (MSP) and managed security service provider (MSSP) exclusively focused on the IT needs of small and mid-market enterprises.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
15Exact matchLenexa, KS, United StatesHQ recorded Sep 28, 2026201-500254 contacts →

Exact match

“FireMon is the founder of Network Security Policy Management (NSPM) and serves as the control plane for security policy across modern enterprise networks.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
16Exact matchCharlotte, NC, United StatesHQ recorded Sep 28, 2026201-500240 contacts →

Exact match

“GLS is a managed network and security services provider founded in 1998.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
17Exact matchSanta Ana, CA, United StatesHQ recorded Sep 28, 2026201-500240 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
18Exact matchCovina, CA, United StatesHQ recorded Sep 28, 2026201-500239 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
19Exact matchSan Juan, PR, United StatesHQ recorded Sep 28, 20261,001-5,000239 contacts →

Exact match

“GM Sectec is a multi-national organization laser focused on cyber defense, advisory and fraud prevention.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
20Exact matchChantilly, VA, United StatesHQ recorded Sep 28, 2026201-500220 contacts →

Exact match

“For over 20 years, leading companies in Telecom, Cybersecurity, Healthcare, Banking, New Media, and more have come to rely on Loginsoft as a trusted resource for technology talent.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
21Exact matchSan Francisco, CA, United StatesHQ recorded Sep 28, 2026201-500211 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
22Exact matchNew York, NY, United StatesHQ recorded Sep 28, 2026201-500206 contacts →

Exact match

“Since 1969, thousands of businesses across the country have entrusted their protection to DGA Security.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
23Exact matchSalt Lake City, UT, United StatesHQ recorded Sep 28, 2026201-500202 contacts →

Exact match

“Stone Security has been driving the implementation of network-based surveillance, access control and intrusion systems for over 15 years.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
24Exact matchNew York, NY, United StatesHQ recorded Sep 28, 2026201-500200 contacts →

Exact match

“Agio is a hybrid cybersecurity and managed IT organization that combines predictive intelligence with human brilliance to empower clients with next-generation cyber protection and…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
25Exact matchBroomfield, CO, United StatesHQ recorded Sep 28, 2026501-1,000199 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase

Showing 25 of 1,523 managed network security companies based in the United States

See the full list, filter by size, metro and specialty, and access 14,613 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Managed network security companies based in the United States at a glance

As of Sep 28, 2026
35.0%Verified-email coverage
27.4Average contacts per company
1-10Median size (employees)
2.4%Largest-city concentration · New York
Sep 28, 2026Page data refreshed

Companies by employee count

1-10
790
11-50
511
51-200
144
201-500
41
501-1,000
15
1,001-5,000
12
5,001-10,000
3
10001+
3

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 1,523 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

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
Company records associated with the United States whose business descriptions match “managed network security companies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 14,613 professional contacts with verified work emails across the full matched dataset. 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 28, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “managed network security companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

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

RevenueBase identified 1,523 company matches for managed network security companies associated with the United States as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Symantec tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most managed network security companies?

New York leads with 36 company records, followed by Houston (33) and Austin (32).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 14,613 professional contacts with verified work emails tracked across these 1,523 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 28, 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.