Company lists · Data refreshed September 2026

Top 25 Network security consulting companies based in the United States

RevenueBase identified 3,427 network security consulting companies headquartered in the United States as of September 2026 and tracks 45,351 professional contacts across them, including 14,112 with verified work emails and 13,859 with mobile numbers. New York is the largest hub.

This list covers network security consulting 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
3,427Companies
45,351Contacts tracked
14,112Verified emails
13,859Mobile numbers
Unlock all 3,427 companies Free signup · no credit card · 500 free credits

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

Ranked by team size
Top 25 of 3,427 network security consulting 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 consulting 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
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
2
OPTIVIndirect evidence
Leawood, KS, United StatesHQ checked Sep 5, 20261,001-5,0002,222

“Optiv is the cyber advisory and solutions leader, delivering strategic and technical expertise to nearly companies across every major industry.”

Source: company website · checked Sep 5, 2026
3
Guidepoint SecurityPartial evidence
Reston, VA, United StatesHQ checked Sep 5, 20261,001-5,0001,232

“GuidePoint Security provides trusted cybersecurity expertise, solutions, and services that help organizations make informed decisions and minimize risk.”

Source: company website · checked Sep 5, 2026
4Chicago, IL, United StatesHQ checked Sep 5, 2026501-1,000874

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

Source: company website · checked Sep 5, 2026
5
Ultraviolet CyberPartial evidence
Mclean, VA, United StatesHQ checked Sep 5, 2026501-1,000523

“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…”

Source: company website · checked Sep 5, 2026
6
Aujas CybersecurityIndirect evidence
Cupertino, CA, United StatesHQ checked Sep 5, 20261,001-5,000473

“At Aujas Cybersecurity, we specialize in building and transforming cybersecurity postures to help businesses effectively mitigate risks.”

Source: company website · checked Sep 5, 2026
7
AppgatePartial evidence
Coral Gables, FL, United StatesHQ checked Sep 5, 2026501-1,000381

“AppGate secures and protects an organization's most valuable assets with its high performance Zero Trust Network Access (ZTNA) solution and Cyber Advisory Services.”

Source: company website · checked Sep 5, 2026
8
IBN TechnologiesIndirect evidence
Miami, FL, United StatesHQ checked Sep 5, 202651-200365

“Welcome to IBN Technologies, LLC, Your Trusted Partner in Cybersecurity, Cloud, and Finance Solutions With 26+ years of expertise, IBN Technologies leads in delivering integrated…”

Source: company website · checked Sep 5, 2026
9
Security Risk AdvisorsPartial evidence
Philadelphia, PA, United StatesHQ checked Sep 5, 2026201-500315

“We deliver cybersecurity consulting, 24x7 operations and SaaS to leading companies in the Financial Services, Healthcare, Pharmaceuticals, Technology and Retail industries.”

Source: company website · checked Sep 5, 2026
10
LogicallyIndirect evidence
Dublin, OH, United StatesHQ checked Sep 5, 2026201-500300

“Welcome to Logically.”

Source: company website · checked Sep 5, 2026
11
Baxter Clewis CybersecurityIndirect evidence
Cedar Hill, TX, United StatesHQ checked Sep 5, 2026201-500255

“Baxter Clewis Cybersecurity, we bring to the table a unique set of experiences that allow us to best serve your cybersecurity needs.”

Source: company website · checked Sep 5, 2026
12
Orion Security SolutionsPartial evidence
Edmond, OK, United StatesHQ checked Sep 5, 202651-200250

“Orion Security Systems (OSS) provides elite technical, physical, and cyber security solutions for customers with simple to complex needs.”

Source: company website · checked Sep 5, 2026
13
LumifiPartial evidence
Scottsdale, AZ, United StatesHQ checked Sep 5, 202651-200249

“Lumifi Cyber helps organizations illuminate their cyber defense with continuous protection across the full security lifecycle.”

Source: company website · checked Sep 5, 2026
14
Securin INCPartial evidence
Albuquerque, NM, United StatesHQ checked Sep 5, 2026201-500244

Securin is obsessed with helping leaders continuously improve their security posture.”

Source: company website · checked Sep 5, 2026
15
NTGIndirect evidence
Tampa, FL, United StatesHQ checked Sep 5, 202651-200236

“NTG is where excellence meets innovation.”

Source: company website · checked Sep 5, 2026
16
LoginsoftIndirect evidence
Chantilly, VA, United StatesHQ checked Sep 5, 2026201-500220

“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.”

Source: company website · checked Sep 5, 2026
17
SayersIndirect evidence
Vernon Hills, IL, United StatesHQ checked Sep 5, 202651-200209

“At Sayers, we offer expert guidance to help organizations tackle cyber, cloud, and IT infrastructure challenges.”

Source: company website · checked Sep 5, 2026
18
TCM SecurityPartial evidence
Charlotte, NC, United StatesHQ checked Sep 5, 2026n/a206

“A veteran-owned cybersecurity company focused on penetration testing, security training, and compliance.”

Source: company website · checked Sep 5, 2026
19Reston, VA, United StatesHQ checked Sep 5, 20261,001-5,000204

“MindPoint Group, a Quantum Sky company, is a cybersecurity specialist trusted by U.S.”

Source: company website · checked Sep 5, 2026
20Salt Lake City, UT, United StatesHQ checked Sep 5, 2026201-500202

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

Source: company website · checked Sep 5, 2026
21
TevoraIndirect evidence
Irvine, CA, United StatesHQ checked Sep 5, 2026201-500199

“Founded in 2003, Tevora is a specialized management consultancy focused on cybersecurity, risk, and compliance services.”

Source: company website · checked Sep 5, 2026
22
Safeaeon INCPartial evidence
Pleasanton, CA, United StatesHQ checked Sep 5, 202651-200196

“SafeAeon leads the industry as a top-tier Cybersecurity-as-a-Service provider, delivering 24x7 premium Managed Security Services with AI-powered and human-driven 24x7 SOC…”

Source: company website · checked Sep 5, 2026
23
DeepseasIndirect evidence
Globally Distributed, United StatesHQ checked Sep 5, 2026201-500182

“With 30 years of experience in cyber defense, DeepSeas is trusted by nearly clients around the world, including Fortune 100 enterprises and mid-market organizations, municipality…”

Source: company website · checked Sep 5, 2026
24
Cyber AdvisorsPartial evidence
Maple Grove, MN, United StatesHQ checked Sep 5, 2026201-500176

“Cyber Advisors is a nationwide leader in cyber security, providing a comprehensive range of Offensive, Defensive, and Risk Management services.”

Source: company website · checked Sep 5, 2026
25Huntsville, AL, United StatesHQ checked Sep 5, 2026n/a175

“HiWAAY's Network Services specializes in network design, business process analysis, information security and managed IT services.”

Source: company website · checked Sep 5, 2026

Showing 25 of 3,427 network security consulting companies based in the United States

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

As of Sep 5, 2026
1-10Median size (employees)
New YorkLargest hub · 78 HQs
13,859Contacts with mobile numbers
Sep 5, 2026Data refreshed

Companies by employee count

1-10
2,112
11-50
1,007
51-200
238
201-500
42
501-1,000
7
1,001-5,000
11
5,001-10,000
1
10001+
3

Verified emails by last verification

0–30
12,990
31–60
945
61–90
23
90–180
8
180+
146

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 consulting 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 consulting 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 consulting 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, 14,112 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 consulting companies are there based in the United States?

RevenueBase identified 3,427 network security consulting 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?

Symantec, headquartered in San Jose, tops this list with the largest team on record.

Which city has the most network security consulting companies?

New York leads with 78 headquartered companies, followed by Atlanta (65) and Houston (60).

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 14,112 verified decision-maker contacts tracked across these 3,427 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.