Company lists · Data refreshed September 2026

Top 23 Ics security companies based in the United States

Name: Ics security companies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 3, 2026 2,218 companies tracked

RevenueBase identified 2,218 ics security companies headquartered in the United States as of September 2026 and tracks 38,626 professional contacts across them, including 15,259 with verified work emails and 13,562 with mobile numbers. Houston is the largest hub.

This list covers ics security 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 3, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 RevenueBase Smart Search rating on every row Refreshed Sep 3, 2026 86% judged on-target in blind review

2,218Companies

38,626Contacts tracked

15,259Verified emails

13,562Mobile numbers

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The 23 largest ics security companies based in the United States

Ranked by team size

Top 23 of 2,218 ics security companies based in the United States, ranked by team size, largest first. Data refreshed Sep 3, 2026. RevenueBase Smart Search rates how each company's information relates to ics security companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Trellix	Partial evidence	Plano, TX, United StatesHQ checked Sep 3, 2026	1,001-5,000	3,490 contacts →
	Partial evidence “Trellix is a global cybersecurity company delivering intelligence-led cyber resilience for security-conscious organizations at any stage of their journey.” Source: RevenueBase Database · checked Sep 3, 2026
2	OPTIV	Indirect evidence	Leawood, VA, United StatesHQ checked Sep 3, 2026	1,001-5,000	2,206 contacts →
	Indirect evidence “Optiv is the cyber advisory and solutions leader, delivering strategic and technical expertise to nearly companies across every major industry.” Source: RevenueBase Database · checked Sep 3, 2026
3	Guidepoint Security	Partial evidence	Reston, FL, United StatesHQ checked Sep 3, 2026	1,001-5,000	1,234 contacts →
	Partial evidence “GuidePoint Security provides trusted cybersecurity expertise, solutions, and services that help organizations make informed decisions and minimize risk.” Source: RevenueBase Database · checked Sep 3, 2026
4	PAS	Indirect evidence	Houston, TX, United StatesHQ checked Sep 3, 2026	201-500	1,227 contacts →
	Indirect evidence “PAS, part of Hexagon's Asset Lifecycle Intelligence division, delivers software solutions that prevent, detect, & remediate cyber threats, reduce process safety risks, and…” Source: RevenueBase Database · checked Sep 3, 2026
5	Telos Corporation	Partial evidence	Ashburn, NV, United StatesHQ checked Sep 3, 2026	501-1,000	636 contacts →
	Partial evidence “Telos empowers and protects the world’s most security-conscious organizations with solutions for continuous security assurance of individuals, systems, and information.” Source: RevenueBase Database · checked Sep 3, 2026
6	Vikingcloud	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 3, 2026	1,001-5,000	618 contacts →
	Indirect evidence “VikingCloud delivers battle-tested cybersecurity and compliance solutions that simply work.” Source: RevenueBase Database · checked Sep 3, 2026
7	Dragos, INC	Indirect evidence	Hanover, TX, United StatesHQ checked Sep 3, 2026	501-1,000	544 contacts →
	Indirect evidence “Dragos provides the most effective OT cybersecurity technology for industrial and critical infrastructure to deliver on our global mission: to safeguard civilization.” Source: RevenueBase Database · checked Sep 3, 2026
8	Ultraviolet Cyber	Partial evidence	Mclean, AZ, United StatesHQ checked Sep 3, 2026	501-1,000	517 contacts →
	Partial evidence “UltraViolet Cyber is the only security operations partner that unifies red, blue, and purple team capabilities into one integrated program.” Source: RevenueBase Database · checked Sep 3, 2026
9	ADS Security	Partial evidence	Nashville, AL, United StatesHQ checked Sep 3, 2026	201-500	325 contacts →
	Partial evidence “Headquartered in Nashville, TN, with branches throughout the Southeastern United States, ADS Security, a Vector Security company, is the 20th largest electronic security company…” Source: RevenueBase Database · checked Sep 3, 2026
10	Security Risk Advisors	Indirect evidence	Philadelphia, PA, United StatesHQ checked Sep 3, 2026	201-500	311 contacts →
	Indirect evidence “We deliver cybersecurity consulting, 24x7 operations and SaaS to leading companies in the Financial Services, Healthcare, Pharmaceuticals, Technology and Retail industries.” Source: RevenueBase Database · checked Sep 3, 2026
11	Amsys Innovative Solutions	Indirect evidence	Houston, TX, United StatesHQ checked Sep 3, 2026	201-500	311 contacts →
	Indirect evidence “AMSYS is a nationwide IT Services Provider headquartered in Houston, TX.” Source: RevenueBase Database · checked Sep 3, 2026
12	Sonitrol	Partial evidence	Indianapolis, United StatesHQ checked Sep 3, 2026	10001+	302 contacts →
	Partial evidence “Sonitrol is the industry leader in verified electronic security and provides customers with a single source of integrated security solutions for intrusion, video, access and fire.” Source: RevenueBase Database · checked Sep 3, 2026
13	Cipher A Prosegur Company	Indirect evidence	Miami, FL, United StatesHQ checked Sep 3, 2026	201-500	294 contacts →
	Indirect evidence “We are Cipher, a company from the Prosegur group specializing in Cybersecurity.” Source: RevenueBase Database · checked Sep 3, 2026
14	Feditc	Partial evidence	Rockville, TX, United StatesHQ checked Sep 3, 2026	201-500	291 contacts →
	Partial evidence “Founded in 2003, FEDITC, LLC is an ISO and CMMI level 3 certified cyber security, IT, and engineering services firm.” Source: RevenueBase Database · checked Sep 3, 2026
15	Niksun	Indirect evidence	Princeton, NJ, United StatesHQ checked Sep 3, 2026	201-500	274 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 3, 2026
16	Baxter Clewis Cybersecurity	Indirect evidence	Cedar Hill, TX, United StatesHQ checked Sep 3, 2026	201-500	251 contacts →
	Indirect evidence “Baxter Clewis Cybersecurity, we bring to the table a unique set of experiences that allow us to best serve your cybersecurity needs.” Source: RevenueBase Database · checked Sep 3, 2026
17	Wittenbach	Partial evidence	Sparks, MD, United StatesHQ checked Sep 3, 2026	201-500	247 contacts →
	Partial evidence “For over 50 years, Wittenbach has been a trusted leader in advanced security solutions in financial and commercial industries.” Source: RevenueBase Database · checked Sep 3, 2026
18	Lumifi	Partial evidence	Scottsdale, AZ, United StatesHQ checked Sep 3, 2026	51-200	247 contacts →
	Partial evidence “Lumifi Cyber helps organizations illuminate their cyber defense with continuous protection across the full security lifecycle.” Source: RevenueBase Database · checked Sep 3, 2026
19	GM Sectec	Indirect evidence	San Juan, United StatesHQ checked Sep 3, 2026	1,001-5,000	241 contacts →
	Indirect evidence “GM Sectec is a multi-national organization laser focused on cyber defense, advisory and fraud prevention.” Source: RevenueBase Database · checked Sep 3, 2026
20	Hirsch USA	Partial evidence	Santa Ana, CA, United StatesHQ checked Sep 3, 2026	201-500	234 contacts →
	Partial evidence “Hirsch is a global leader in unified security solutions, helping enterprise and SMB organisations integrate perimeter security, intrusion detection, access control, video…” Source: RevenueBase Database · checked Sep 3, 2026
21	Tricorps	Partial evidence	Oklahoma City, OK, United StatesHQ checked Sep 3, 2026	501-1,000	232 contacts →
	Partial evidence “TriCorps is an integrated security and technology firm that specializes in providing cost effective, world-class services tailored to meeting the needs of our clients.” Source: RevenueBase Database · checked Sep 3, 2026
22	Epsilon Inc., An American Systems Company	Indirect evidence	Weaverville, SC, United StatesHQ checked Sep 3, 2026	201-500	225 contacts →
	Indirect evidence “Epsilon, an AMERICAN SYSTEMS company, began with a simple yet powerful mission: to make IT empower people-not frustrate them.” Source: RevenueBase Database · checked Sep 3, 2026
23	Mindpoint Group, A Tyto Athene Company	Partial evidence	Reston, VA, United StatesHQ checked Sep 3, 2026	1,001-5,000	208 contacts →
	Partial evidence “When it comes to Information Security Consulting, we are the team the specialists turn to.” Source: RevenueBase Database · checked Sep 3, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: ics security companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names ics security companies.
Partial evidence: Its own public description names part of ics security companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name ics security companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 23 of 2,218 ics security companies based in the United States

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Ics security companies based in the United States at a glance

As of Sep 3, 2026

39.5%Verified-email coverage

35.1%Mobile-number coverage

17.4Average contacts per company

1-10Median size (employees)

2.6%Largest-city concentration · Houston

Sep 3, 2026Page data refreshed

Companies by employee count

1-10

1,129

11-50

759

51-200

237

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

00–30

1,36531–60

8,79161–90

4,98690–180

117180+

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 ics security companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search 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 Smart Search, 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 “ics security companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names ics security companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among ics security 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 its RevenueBase Smart Search 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, 15,259 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 3, 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.

Ics security companies by metro

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names ics security companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

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

RevenueBase identified 2,218 ics security 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?

Trellix, headquartered in Plano, tops this list with the largest team on record.

Which city has the most ics security companies?

Houston leads with 58 headquartered companies, followed by New York (55) and Miami (39).

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 15,259 verified decision-maker contacts tracked across these 2,218 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 3, 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 Smart Search, 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.