Company lists · Data refreshed September 2026

Top 25 Infrastructure security companies based in the United States

Name: Infrastructure 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 5,196 companies tracked

RevenueBase identified 5,196 infrastructure security companies headquartered in the United States as of September 2026 and tracks 136,523 professional contacts across them, including 49,640 with verified work emails and 48,074 with mobile numbers. New York is the largest hub.

This list covers infrastructure 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, how directly it supports the match, 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 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 3, 2026 86% judged on-target in blind review

5,196Companies

136,523Contacts tracked

49,640Verified emails

48,074Mobile numbers

Unlock all 5,196 companies Free signup · no credit card · 500 free credits

The 25 largest infrastructure security companies based in the United States

Ranked by team size

Top 25 of 5,196 infrastructure security companies based in the United States, ranked by team size, largest first. Data refreshed Sep 3, 2026. Evidence rates how directly each company's own description names infrastructure security 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.
#	Company	Headquarters	Employees	Contacts
1	SymantecPartial evidence	San Jose, CA, United StatesHQ checked Sep 3, 2026	10001+	11,179
	“Your backstage pass to the most epic cybersecurity solutions on the market for Endpoint, Network, Data and Cloud security.” Source: company website · checked Sep 3, 2026
2	CrowdstrikePartial evidence	Remote, United StatesHQ checked Sep 3, 2026	5,001-10,000	10,059
	“CrowdStrike (Nasdaq: CRWD), a global cybersecurity leader, has redefined modern security with the world’s most advanced cloud-native platform for protecting critical areas of…” Source: company website · checked Sep 3, 2026
3	MantechIndirect evidence	Herndon, VA, United StatesHQ checked Sep 3, 2026	5,001-10,000	9,756
	“MANTECH is more than a technology company.” Source: company website · checked Sep 3, 2026
4	TrellixPartial evidence	Plano, TX, United StatesHQ checked Sep 3, 2026	1,001-5,000	3,490
	“Trellix is a global cybersecurity company delivering intelligence-led cyber resilience for security-conscious organizations at any stage of their journey.” Source: company website · checked Sep 3, 2026
5	OPTIVIndirect evidence	Leawood, VA, United StatesHQ checked Sep 3, 2026	1,001-5,000	2,206
	“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 3, 2026
6	Paragon Systems INCPartial evidence	Herndon, VA, United StatesHQ checked Sep 3, 2026	10001+	1,946
	“Paragon Systems employs over 10,500 professionals in specialized operations providing security, fire, investigations, inspections, cybersecurity, risk management, and mission…” Source: company website · checked Sep 3, 2026
7	FortraIndirect evidence	Eden Prairie, MN, United StatesHQ checked Sep 3, 2026	1,001-5,000	1,640
	“Fortra delivers AI-amplified cybersecurity solutions that help organizations use and protect data with confidence.” Source: company website · checked Sep 3, 2026
8	ForcepointPartial evidence	Austin, TX, United StatesHQ checked Sep 3, 2026	1,001-5,000	1,620
	“Forcepoint simplifies security for global businesses and governments.” Source: company website · checked Sep 3, 2026
9	Dynetics, INCStrong evidence	Huntsville, AL, United StatesHQ checked Sep 3, 2026	10001+	1,533
	“Leidos Dynetics provides responsive, cost-effective engineering, scientific, IT solutions to the national security, cybersecurity, space, and critical infrastructure sectors.” Source: company website · checked Sep 3, 2026
10	Government AcquisitionsIndirect evidence	Cincinnati, OH, United StatesHQ checked Sep 3, 2026	n/a	1,439
	“Government Acquisitions, LLC (GAI) stands at the forefront of a transformative era, where artificial intelligence is reshaping our world and the stakes have never been higher.” Source: company website · checked Sep 3, 2026
11	Thales Cybersecurity ProductsIndirect evidence	Austin, TX, United StatesHQ checked Sep 3, 2026	1,001-5,000	1,252
	“Thales is a global leader in cybersecurity, helping the most trusted organizations in the world protect their most critical applications, data, and identities anywhere at scale.” Source: company website · checked Sep 3, 2026
12	Guidepoint SecurityPartial evidence	Reston, FL, United StatesHQ checked Sep 3, 2026	1,001-5,000	1,234
	“GuidePoint Security provides trusted cybersecurity expertise, solutions, and services that help organizations make informed decisions and minimize risk.” Source: company website · checked Sep 3, 2026
13	ImpervaIndirect evidence	Austin, TX, United StatesHQ checked Sep 3, 2026	10001+	1,211
	“On Dec.” Source: company website · checked Sep 3, 2026
14	PPCIndirect evidence	Trevose, PA, United StatesHQ checked Sep 3, 2026	201-500	981
	“PPC is now part of DSA” Source: company website · checked Sep 3, 2026
15	CoalfireIndirect evidence	Chicago, IL, United StatesHQ checked Sep 3, 2026	1,001-5,000	960
	“Coalfire is the premier Cybersecurity and Compliance Services leader for the tech, healthcare, and finance industries.(This page is maintained by Marketing.” Source: company website · checked Sep 3, 2026
16	Tyto Athene, LLCIndirect evidence	Reston, VA, United StatesHQ checked Sep 3, 2026	1,001-5,000	858
	“At Tyto Athene, we help turn Data to Dominance.” Source: company website · checked Sep 3, 2026
17	Application Specialist Kompany ASKIndirect evidence	Lansing, MI, United StatesHQ checked Sep 3, 2026	n/a	785
	“ASK is now Convergence Networks!” Source: company website · checked Sep 3, 2026
18	BitsightIndirect evidence	Boston, NC, United StatesHQ checked Sep 3, 2026	501-1,000	753
	“Bitsight is the global leader in cyber risk intelligence, leveraging advanced AI to empower organizations with precise insights derived from the industry’s most extensive external…” Source: company website · checked Sep 3, 2026
19	A10 Networks, INCStrong evidence	San Jose, CA, United StatesHQ checked Sep 3, 2026	501-1,000	673
	“A10 Networks provides security and infrastructure solutions for on-premises, hybrid cloud, and edge-cloud environments.” Source: company website · checked Sep 3, 2026
20	Telos CorporationPartial evidence	Ashburn, NV, United StatesHQ checked Sep 3, 2026	501-1,000	636
	“Telos empowers and protects the world’s most security-conscious organizations with solutions for continuous security assurance of individuals, systems, and information.” Source: company website · checked Sep 3, 2026
21	VikingcloudIndirect evidence	Chicago, IL, United StatesHQ checked Sep 3, 2026	1,001-5,000	618
	“VikingCloud delivers battle-tested cybersecurity and compliance solutions that simply work.” Source: company website · checked Sep 3, 2026
22	Planned Systems InternationalIndirect evidence	Columbia, FL, United StatesHQ checked Sep 3, 2026	1,001-5,000	608
	“Since 1988, PSI teams have provided our government customers with innovative, cost effective solutions that solve today’s complex challenges, improve operational efficiencies, and…” Source: company website · checked Sep 3, 2026
23	NICIndirect evidence	Los Angeles, CA, United StatesHQ checked Sep 3, 2026	n/a	578
	“NIC has been providing IT Solutions, Cybersecurity, and Cloud Services for businesses and organizations for the past two decades.” Source: company website · checked Sep 3, 2026
24	ComodoPartial evidence	Bloomfield, NJ, United StatesHQ checked Sep 3, 2026	51-200	568
	“Comodo - Protecting Your Digital World At Comodo, we are dedicated to safeguarding your digital property with Comodo Website Security.” Source: company website · checked Sep 3, 2026
25	Dragos, INCPartial evidence	Hanover, TX, United StatesHQ checked Sep 3, 2026	501-1,000	544
	“Dragos provides the most effective OT cybersecurity technology for industrial and critical infrastructure to deliver on our global mission: to safeguard civilization.” Source: company website · checked Sep 3, 2026

Showing 25 of 5,196 infrastructure security companies based in the United States

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Infrastructure security companies based in the United States at a glance

As of Sep 3, 2026

1-10Median size (employees)

New YorkLargest hub · 141 HQs

48,074Contacts with mobile numbers

Sep 3, 2026Data refreshed

Companies by employee count

1-10

2,680

11-50

1,703

51-200

576

201-500

120

501-1,000

1,001-5,000

5,001-10,000

10001+

Verified emails by last verification

0–30

31–60

4,445

61–90

28,468

90–180

15,988

180+

739

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 infrastructure security 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 “infrastructure security 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 infrastructure 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 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, 49,640 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.

Infrastructure security companies by metro

Frequently asked

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

RevenueBase identified 5,196 infrastructure 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?

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

Which city has the most infrastructure security companies?

New York leads with 141 headquartered companies, followed by Washington (105) and Houston (98).

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 49,640 verified decision-maker contacts tracked across these 5,196 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 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.