Company lists · Data verified August 2026

Top 25 AI cybersecurity companies based in the United States

Name: AI cybersecurity 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 2,252 companies tracked

There are 2,252 AI cybersecurity companies headquartered in the United States (RevenueBase, August 2026). RevenueBase tracks 125,003 professional contacts across them, including 59,208 with verified work emails and 35,663 with mobile numbers. New York is the largest hub.

This list covers AI cybersecurity 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.

2,252Companies

125,003Contacts tracked

59,208Verified emails

35,663Mobile numbers

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The 25 largest AI cybersecurity companies based in the United States

Ranked by team size

Top 25 of 2,252 AI cybersecurity 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	Cohesity	Santa Clara, CA	1,001-5,000	4,905	3,691
3	Proofpoint	Boston, MA	1,001-5,000	4,662	3,655
4	Rubrik	Reston, VA	1,001-5,000	4,381	2,545
5	Commvault	Tinton Falls, NJ	1,001-5,000	4,050	2,207
6	Trellix	Plano, TX	1,001-5,000	3,490	1,633
7	Sentinelone	Mountain View, CA	1,001-5,000	3,046	1,926
8	Netskope	Santa Clara, CA	1,001-5,000	3,025	1,996
9	Varonis	Scottsdale, AZ	1,001-5,000	2,741	1,673
10	Ivanti	San Jose	1,001-5,000	2,666	1,783
11	Knowbe4	Clearwater, FL	1,001-5,000	2,378	1,484
12	Bitdefender	Fort Lauderdale, FL	1,001-5,000	2,141	1,230
13	Barracuda	Alpharetta, GA	1,001-5,000	2,108	1,463
14	Fortra	Eden Prairie, MN	1,001-5,000	1,640	1,037
15	Reliaquest	Sandy, UT	1,001-5,000	1,252	980
16	Thales Cybersecurity Products	Austin, TX	1,001-5,000	1,252	645
17	Guidepoint Security	Tampa, FL	1,001-5,000	1,234	809
18	Imperva	Austin, TX	10001+	1,211	829
19	CYERA	San Francisco, CA	1,001-5,000	1,121	642
20	Watchguard Technologies	Seattle, WA	1,001-5,000	1,054	631
21	Netenrich	San Jose, CA	501-1,000	885	261
22	Exabeam	Broomfield, CO	501-1,000	873	465
23	Sumo Logic	Redwood City, CA	501-1,000	843	397
24	Bitsight	Raleigh, NC	501-1,000	753	158
25	Securonix	Plano, TX	501-1,000	700	312

Showing 25 of 2,252 AI cybersecurity companies based in the United States

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AI cybersecurity companies based in the United States at a glance

As of Aug 28, 2026

11-50Median size (employees)

New YorkLargest hub · 101 HQs

35,663Contacts with mobile numbers

387Emails re-verified in last 30 days

Companies by employee count

1-10

1,029

11-50

762

51-200

308

201-500

501-1,000

1,001-5,000

10001+

AI cybersecurity companies by metro

Metro	Companies
AI cybersecurity companies in New York	101
AI cybersecurity companies in San Francisco	79
AI cybersecurity companies in Austin	54
AI cybersecurity companies in Miami	44
AI cybersecurity companies in Boston	38
AI cybersecurity companies in Dallas	36
AI cybersecurity companies in Washington	33

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 “AI cybersecurity 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; 387 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 AI cybersecurity companies are there based in the United States?

There are 2,252 AI cybersecurity 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 AI cybersecurity companies?

New York leads with 101 headquartered companies, followed by San Francisco (79) and Austin (54).

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 59,208 verified decision-maker contacts tracked across these 2,252 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.