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Company lists · Data verified August 2026

Top 25 Cyber-physical security companies based in the United States

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 3,998 companies tracked

There are 3,998 cyber-physical security companies headquartered in the United States (RevenueBase, August 2026). RevenueBase tracks 220,999 professional contacts across them, including 39,231 with verified work emails and 72,648 with mobile numbers. Houston is the largest hub.

This list covers cyber-physical 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.

3,998Companies
220,999Contacts tracked
39,231Verified emails
72,648Mobile numbers
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The 25 largest cyber-physical security companies based in the United States

Ranked by team size
Top 25 of 3,998 cyber-physical 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.
#CompanyHQEmployeesContactsVerified emails
1Allied UniversalRosemont, IL10001+62,7156,035
2Securitas Security Services Usa, INCBoise, ID10001+38,6501,761
3ConvergintHoffman Estates, IL10001+5,7293,252
4U.S. Security Associates, INCSalt Lake City, UT10001+3,60042
5Andy Frain ServicesAurora, IL5,001-10,0002,265199
6OPTIVChantilly, VA1,001-5,0002,2061,422
7EveronIrving, TX1,001-5,0002,022156
8Paragon Systems INCHerndon, VA10001+1,94675
9Protection 1 Security SolutionsWichita, KS1,001-5,0001,4058
10Weiser Security Services, INCNew Orleans, LA1,001-5,0001,389134
11Safe Haven Security Services, LLCNorth Kansas City, MO1,001-5,0001,280274
12Thales Cybersecurity ProductsAustin, TX1,001-5,0001,252645
13ImpervaAustin, TX10001+1,211829
14DSI Security ServicesDothan, AL1,001-5,0001,186125
15Titan Security GroupChicago, IL1,001-5,0001,133219
16PER MAR Security ServicesDavenport, IA1,001-5,0001,122203
17St. Moritz Security Services, INCDallas, TX5,001-10,0001,057187
18Brosnan Risk ConsultantsNewhall, CA5,001-10,0001,047188
19Securitas Electronic Security, INCUniontown, OH10001+846247
20Northeast Security INCWestwood, MA1,001-5,000744185
21PavionChantilly, VA1,001-5,000554358
22Security AllianceMiami, FL1,001-5,00055130
23Securitas UAEAbu Dhabi10001+48827
24Xcelerate SolutionsMclean, VA1,001-5,0004458
25Kent ServicesNorth Miami Beach, FL1,001-5,00041819

Showing 25 of 3,998 cyber-physical security companies based in the United States

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Cyber-physical security companies based in the United States at a glance

As of Aug 28, 2026
11-50Median size (employees)
HoustonLargest hub · 97 HQs
72,648Contacts with mobile numbers
67Emails re-verified in last 30 days

Companies by employee count

1-10
1,664
11-50
1,534
51-200
511
201-500
129
501-1,000
65
1,001-5,000
52
5,001-10,000
12
10001+
21

Cyber-physical security companies by metro

MetroCompanies
Cyber-physical security companies in Houston97
Cyber-physical security companies in New York93
Cyber-physical security companies in Miami67
Cyber-physical security companies in Dallas64
Cyber-physical security companies in Austin49
Cyber-physical security companies in Los Angeles43
Cyber-physical security companies in Atlanta40

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 “cyber-physical 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; 67 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 cyber-physical security companies are there based in the United States?

There are 3,998 cyber-physical security companies headquartered in the United States as of August 2026 (RevenueBase).

What is the largest company on this list?

Allied Universal, headquartered in Rosemont, tops this list with the largest team on record.

Which city has the most cyber-physical security companies?

Houston leads with 97 headquartered companies, followed by New York (93) and Miami (67).

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 39,231 verified decision-maker contacts tracked across these 3,998 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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Related lists

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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.

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