Company lists · Data verified August 2026

Top 25 Cybersecurity for city infrastructure based in the United States

Name: Cybersecurity for city infrastructure 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 1,035 companies tracked

There are 1,035 cybersecurity for city infrastructure headquartered in the United States (RevenueBase, August 2026). RevenueBase tracks 14,713 professional contacts across them, including 5,892 with verified work emails and 5,426 with mobile numbers. Houston is the largest hub.

This list covers cybersecurity for city infrastructure 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.

1,035Companies

14,713Contacts tracked

5,892Verified emails

5,426Mobile numbers

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The 25 largest cybersecurity for city infrastructure based in the United States

Ranked by team size

Top 25 of 1,035 cybersecurity for city infrastructure 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	Dragos, INC	Houston, TX	501-1,000	544	382
2	Vc3	Memphis, TN	501-1,000	517	374
3	Ultraviolet Cyber	Phoenix, AZ	501-1,000	517	258
4	Securityhq	New York, NY	501-1,000	492	279
5	Mnemonic	Redwood City, CA	201-500	345	9
6	Logically	Danbury, CT	201-500	307	203
7	Cipher A Prosegur Company	Miami, FL	201-500	294	70
8	Lumifi	Scottsdale, AZ	51-200	247	92
9	Epsilon Inc., An American Systems Company	Greenville, SC	201-500	225	98
10	Vehere	San Francisco, CA	201-500	210	138
11	Netdata Cybersecurity	Miami, FL	201-500	209	78
12	Deepseas	n/a	201-500	185	132
13	Cyber Advisors	Maple Grove, MN	201-500	180	112
14	Hitachi Cyber	Santa Clara, CA	501-1,000	161	58
15	At&t Cybersecurity	Dallas, TX	1,001-5,000	158	29
16	Valiant Solutions	Mclean, VA	201-500	156	94
17	Helpsystems	Eden Prairie, MN	1,001-5,000	132	27
18	Adapt Forward	North Charleston, SC	51-200	130	36
19	Sealing Technologies, A Parsons Company	Columbia, MD	51-200	119	1
20	Directdefense	Denver, CO	51-200	112	87
21	WATI	Sacramento, CA	201-500	106	13
22	Trustedsec	Fairlawn, OH	51-200	100	72
23	Golden West Technologies	Rapid City, SD	51-200	93	16
24	Skyepoint Decisions, INC	Dulles, VA	51-200	91	58
25	Techguard Security	Ofallon, IL	51-200	81	22

Showing 25 of 1,035 cybersecurity for city infrastructure based in the United States

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Cybersecurity for city infrastructure based in the United States at a glance

As of Aug 28, 2026

11-50Median size (employees)

HoustonLargest hub · 24 HQs

5,426Contacts with mobile numbers

11Emails re-verified in last 30 days

Companies by employee count

1-10

504

11-50

360

51-200

119

201-500

501-1,000

1,001-5,000

5,001-10,000

Cybersecurity for city infrastructure by metro

Metro	Companies
Cybersecurity for city infrastructure in Houston	24
Cybersecurity for city infrastructure in New York	21
Cybersecurity for city infrastructure in Dallas	20
Cybersecurity for city infrastructure in Washington	17
Cybersecurity for city infrastructure in Miami	17
Cybersecurity for city infrastructure in Austin	14
Cybersecurity for city infrastructure in Chicago	14

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 for city infrastructure”, 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; 11 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 for city infrastructure are there based in the United States?

There are 1,035 cybersecurity for city infrastructure headquartered in the United States as of August 2026 (RevenueBase).

What is the largest company on this list?

Dragos, INC, headquartered in Houston, tops this list with the largest team on record.

Which city has the most cybersecurity for city infrastructure?

Houston leads with 24 headquartered companies, followed by New York (21) and Dallas (20).

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 5,892 verified decision-maker contacts tracked across these 1,035 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.