Company lists · Data verified August 2026

Top 25 Data security companies based in the United States

Name: Data security 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 1,296 companies tracked

There are 1,296 data security companies headquartered in the United States (RevenueBase, August 2026). RevenueBase tracks 42,864 professional contacts across them, including 22,320 with verified work emails and 13,509 with mobile numbers. New York is the largest hub.

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

1,296Companies

42,864Contacts tracked

22,320Verified emails

13,509Mobile numbers

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The 25 largest data security companies based in the United States

Ranked by team size

Top 25 of 1,296 data security 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	Cohesity	Santa Clara, CA	1,001-5,000	4,905	3,691
2	Proofpoint	Boston, MA	1,001-5,000	4,662	3,655
3	Varonis	Scottsdale, AZ	1,001-5,000	2,741	1,673
4	Digicert	Lehi, UT	1,001-5,000	1,755	1,237
5	Fortra	Eden Prairie, MN	1,001-5,000	1,640	1,037
6	Forcepoint	Austin, TX	1,001-5,000	1,620	1,084
7	Thales Cybersecurity Products	Austin, TX	1,001-5,000	1,252	645
8	DRUVA	Denver, CO	1,001-5,000	1,213	785
9	CYERA	San Francisco, CA	1,001-5,000	1,121	642
10	Coalfire	Chicago, IL	1,001-5,000	960	613
11	Vikingcloud	Chicago, IL	1,001-5,000	618	436
12	Securityhq	New York, NY	501-1,000	492	279
13	DUO Security	Austin, TX	501-1,000	429	21
14	RED Canary, A Zscaler Company	Denver, CO	201-500	402	270
15	Protegrity	Stamford, CT	201-500	353	186
16	Security Risk Advisors	Philadelphia, PA	201-500	311	216
17	Baxter Clewis Cybersecurity	Cedar Hill, TX	201-500	251	17
18	GM Sectec	Santurce	1,001-5,000	241	69
19	Allstate Identity Protection	Scottsdale, AZ	201-500	217	4
20	Netdata Cybersecurity	Miami, FL	201-500	209	78
21	Concentric AI	San Jose, CA	201-500	202	122
22	ZIX	Dallas, TX	501-1,000	200	64
23	Deepseas	n/a	201-500	185	132
24	Ntirety	Austin, TX	1,001-5,000	166	134
25	Hitachi Cyber	Santa Clara, CA	501-1,000	161	58

Showing 25 of 1,296 data security companies based in the United States

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Data security companies based in the United States at a glance

As of Aug 28, 2026

11-50Median size (employees)

New YorkLargest hub · 61 HQs

13,509Contacts with mobile numbers

41Emails re-verified in last 30 days

Companies by employee count

1-10

616

11-50

455

51-200

147

201-500

501-1,000

1,001-5,000

5,001-10,000

Data security companies by metro

Metro	Companies
Data security companies in New York	61
Data security companies in San Francisco	35
Data security companies in Austin	27
Data security companies in Houston	26
Data security companies in Miami	24
Data security companies in Chicago	24
Data security companies in San Jose	22

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 “data security 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; 41 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 data security companies are there based in the United States?

There are 1,296 data security companies headquartered in the United States as of August 2026 (RevenueBase).

What is the largest company on this list?

Cohesity, headquartered in Santa Clara, tops this list with the largest team on record.

Which city has the most data security companies?

New York leads with 61 headquartered companies, followed by San Francisco (35) and Austin (27).

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 22,320 verified decision-maker contacts tracked across these 1,296 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.