Company lists · Data verified August 2026

Top 25 Cloud network security companies based in the United States

Name: Cloud network 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 574 companies tracked

There are 574 cloud network security companies headquartered in the United States (RevenueBase, August 2026). RevenueBase tracks 59,883 professional contacts across them, including 28,632 with verified work emails and 15,763 with mobile numbers. New York is the largest hub.

This list covers cloud network 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.

574Companies

59,883Contacts tracked

28,632Verified emails

15,763Mobile numbers

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The 25 largest cloud network security companies based in the United States

Ranked by team size

Top 25 of 574 cloud network 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	Symantec	San Jose, CA	10001+	11,179	876
2	Rubrik	Reston, VA	1,001-5,000	4,381	2,545
3	Extreme Networks	Salem, NH	1,001-5,000	3,161	2,146
4	Qualys	Foster City, CA	1,001-5,000	3,042	2,121
5	Netskope	Santa Clara, CA	1,001-5,000	3,025	1,996
6	Infoblox	Tacoma, WA	1,001-5,000	2,808	1,604
7	WIZ	West New York, NY	1,001-5,000	2,528	1,647
8	Imperva	Austin, TX	10001+	1,211	829
9	Watchguard Technologies	Seattle, WA	1,001-5,000	1,054	631
10	Versa Networks	Santa Clara, CA	501-1,000	798	415
11	A10 Networks, INC	San Jose, CA	501-1,000	673	337
12	Sysdig	San Francisco, CA	501-1,000	653	407
13	Skyhigh Security	San Jose, CA	501-1,000	647	313
14	BRIVO	Bethesda, MD	501-1,000	542	269
15	Masergy	Plano, TX	501-1,000	485	222
16	Aviatrix	Santa Clara, CA	201-500	440	315
17	Cynet Security	Boston, MA	201-500	304	225
18	Nsfocus	Santa Clara, CA	1,001-5,000	284	23
19	IBOSS	Boston, MA	201-500	277	153
20	Hillstone Networks	Santa Clara, CA	1,001-5,000	231	1
21	Vehere	San Francisco, CA	201-500	210	138
22	Netdata Cybersecurity	Miami, FL	201-500	209	78
23	Lacework	Sunnyvale, CA	1,001-5,000	198	18
24	Uptycs	Lexington, MA	201-500	145	56
25	PDI Security And Network Solutions	Alpharetta, GA	1,001-5,000	125	65

Showing 25 of 574 cloud network security companies based in the United States

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Cloud network security companies based in the United States at a glance

As of Aug 28, 2026

11-50Median size (employees)

New YorkLargest hub · 25 HQs

15,763Contacts with mobile numbers

149Emails re-verified in last 30 days

Companies by employee count

1-10

216

11-50

208

51-200

201-500

501-1,000

1,001-5,000

10001+

Cloud network security companies by metro

Metro	Companies
Cloud network security companies in New York	25
Cloud network security companies in San Francisco	21
Cloud network security companies in San Jose	19
Cloud network security companies in Santa Clara	14
Cloud network security companies in Austin	13
Cloud network security companies in Palo Alto	11
Cloud network security companies in Los Angeles	10
Cloud network security companies in Houston	10

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 “cloud network 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; 149 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 cloud network security companies are there based in the United States?

There are 574 cloud network security 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 cloud network security companies?

New York leads with 25 headquartered companies, followed by San Francisco (21) and San Jose (19).

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 28,632 verified decision-maker contacts tracked across these 574 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.