Company lists · Data verified August 2026

Top 25 Enterprise security software companies based in the United States

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

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 399 companies tracked

There are 399 enterprise security software companies headquartered in the United States (RevenueBase, August 2026). RevenueBase tracks 37,389 professional contacts across them, including 7,105 with verified work emails and 6,475 with mobile numbers. New York is the largest hub.

This list covers enterprise 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. Data current as of August 28, 2026.

399Companies

37,389Contacts tracked

7,105Verified emails

6,475Mobile numbers

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

Ranked by team size

Top 25 of 399 enterprise security software companies based in the United States, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	Symantec	San Jose, CA	10001+	11,179	876
2	CA Technologies	San Jose, CA	10001+	11,090	6
3	Ivanti	San Jose	1,001-5,000	2,666	1,783
4	Bitdefender	Fort Lauderdale, FL	1,001-5,000	2,141	1,230
5	Huntress	Columbia, MD	501-1,000	694	135
6	SSH Communications Security	New York, NY	51-200	590	105
7	Guidance Software	Las Vegas, NV	501-1,000	496	40
8	K7 Computing	Cerritos, CA	201-500	358	57
9	ONTIC	Austin, TX	201-500	324	207
10	Kingland	Ames, IA	201-500	285	92
11	Minuteman Security & Life Safety	Lynchburg, VA	501-1,000	249	184
12	Hirsch USA	Santa Ana, CA	201-500	234	11
13	Eset North America	San Diego, CA	51-200	180	123
14	Lepide	Austin, TX	51-200	179	40
15	Aikido Security	Chicago, IL	201-500	149	92
16	ESOFT	Broomfield, CO	51-200	140	2
17	Cylance INC	Eden Prairie, MN	5,001-10,000	110	23
18	FASOO	Bethesda, MD	201-500	98	7
19	NETIQ	Houston, TX	501-1,000	91	22
20	Xypro Technology	Simi Valley, CA	51-200	86	43
21	Eshare	Waltham, MA	51-200	85	43
22	Nexum, INC	Nashua, NH	51-200	78	59
23	Inversion6	Westlake, OH	51-200	75	28
24	PC Matic	Sioux City, IA	51-200	69	39
25	Sourcefire, Part Of Cisco	Columbia, MD	501-1,000	63	6

Showing 25 of 399 enterprise security software companies based in the United States

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

As of Aug 28, 2026

11-50Median size (employees)

New YorkLargest hub · 18 HQs

6,475Contacts with mobile numbers

0Emails re-verified in last 30 days

Companies by employee count

1-10

165

11-50

131

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Enterprise security software companies by metro

Metro	Companies
Enterprise security software companies in New York	18
Enterprise security software companies in Austin	12
Enterprise security software companies in San Francisco	10
Enterprise security software companies in San Jose	9
Enterprise security software companies in Chicago	9
Enterprise security software companies in Houston	9
Enterprise security software companies in Miami	8

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “enterprise security software companies”, with match quality audited by blind human judging, and headquartered in the United States.
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: Contact records re-verify on a rolling cadence; 0 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

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

There are 399 enterprise security software companies headquartered in the United States as of August 2026 (RevenueBase).

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 enterprise security software companies?

New York leads with 18 headquartered companies, followed by Austin (12) and San Francisco (10).

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 7,105 verified decision-maker contacts tracked across these 399 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.