Company lists · Data verified August 2026

Top 25 Cybersecurity engineers based in the United States

Name: Cybersecurity engineers 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 3,639 companies tracked

There are 3,639 cybersecurity engineers headquartered in the United States (RevenueBase, August 2026). RevenueBase tracks 80,880 professional contacts across them, including 28,273 with verified work emails and 24,094 with mobile numbers. New York is the largest hub.

This list covers cybersecurity engineers 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.

3,639Companies

80,880Contacts tracked

28,273Verified emails

24,094Mobile numbers

Unlock all 3,639 companies Free account · no credit card · 2 minutes

The 25 largest cybersecurity engineers based in the United States

Ranked by team size

Top 25 of 3,639 cybersecurity engineers 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	Convergint	Hoffman Estates, IL	10001+	5,729	3,252
3	Trellix	Plano, TX	1,001-5,000	3,490	1,633
4	OPTIV	Chantilly, VA	1,001-5,000	2,206	1,422
5	Bitdefender	Fort Lauderdale, FL	1,001-5,000	2,141	1,230
6	Ec-Council	Albuquerque, NM	1,001-5,000	1,269	330
7	Thales Cybersecurity Products	Austin, TX	1,001-5,000	1,252	645
8	Guidepoint Security	Tampa, FL	1,001-5,000	1,234	809
9	Imperva	Austin, TX	10001+	1,211	829
10	Absolute Security	Seattle, WA	501-1,000	789	449
11	Telos Corporation	Las Vegas, NV	501-1,000	636	230
12	Ultraviolet Cyber	Phoenix, AZ	501-1,000	517	258
13	Securityhq	New York, NY	501-1,000	492	279
14	United Security, Inc. USI	Boston, MA	1,001-5,000	409	72
15	Kudelski Security	Irving, TX	201-500	404	201
16	horizon3.ai	Durham, NC	201-500	356	246
17	Security Risk Advisors	Philadelphia, PA	201-500	311	216
18	Logically	Danbury, CT	201-500	307	203
19	Cipher A Prosegur Company	Miami, FL	201-500	294	70
20	Millennium Corporation	Arlington, VA	201-500	273	114
21	Markon	Falls Church, VA	501-1,000	271	137
22	Prescient Security	Nashville, TN	201-500	266	174
23	Baxter Clewis Cybersecurity	Cedar Hill, TX	201-500	251	17
24	Securin INC	Albuquerque, NM	201-500	250	89
25	Hillstone Networks	Santa Clara, CA	1,001-5,000	231	1

Showing 25 of 3,639 cybersecurity engineers based in the United States

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 28,273 reachable decision-makers.

Free account · no credit card

See all 3,639 companies

Cybersecurity engineers based in the United States at a glance

As of Aug 28, 2026

1-10Median size (employees)

New YorkLargest hub · 115 HQs

24,094Contacts with mobile numbers

55Emails re-verified in last 30 days

Companies by employee count

1-10

2,004

11-50

1,156

51-200

336

201-500

501-1,000

1,001-5,000

10001+

Cybersecurity engineers by metro

Metro	Companies
Cybersecurity engineers in New York	115
Cybersecurity engineers in Houston	69
Cybersecurity engineers in Atlanta	68
Cybersecurity engineers in Miami	63
Cybersecurity engineers in Dallas	63
Cybersecurity engineers in Austin	63
Cybersecurity engineers in Washington	62

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 “cybersecurity engineers”, 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; 55 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 cybersecurity engineers are there based in the United States?

There are 3,639 cybersecurity engineers 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 cybersecurity engineers?

New York leads with 115 headquartered companies, followed by Houston (69) and Atlanta (68).

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 28,273 verified decision-maker contacts tracked across these 3,639 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.

Ready to reach these companies? Verified emails and direct dials for all 3,639 cybersecurity engineers based in the United States. Start with a free account, no credit card.

Get the full list

Related lists

Cybersecurity engineers by geography

Browse the directory

Browse: Companies home · All United States lists · All Cybersecurity engineers lists · New lists

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.