Company lists · Data verified August 2026

Top 25 Cybersecurity companies based in New York, United States

Name: Cybersecurity companies based in New York, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 329 companies tracked

Our directory lists 329 cybersecurity companies based in New York, United States, with 9,110 professional contacts and 2,925 email addresses. The list was last updated in August 2026, and New York is the single most-represented city among the companies listed.

Cybersecurity companies provide products and services that protect systems, networks, applications, devices, and data from unauthorized access, disruption, or misuse. This list covers companies that provide cybersecurity products, services, consulting, assessments, monitoring, incident response, or related protection for digital systems and data. Ranked by team size, largest first. Data current as of August 28, 2026.

329Companies

9,110Contacts tracked

2,925Verified emails

2,258Mobile numbers

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The 25 largest cybersecurity companies based in New York, United States

Ranked by team size

Top 25 of 329 cybersecurity companies based in New York, 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	Offsec	New York, NY	201-500	878	43
2	SSH Communications Security	New York, NY	51-200	590	105
3	Securityscorecard	New York, NY	501-1,000	529	5
4	Securityhq	New York, NY	501-1,000	492	279
5	XTIUM	New York, NY	501-1,000	475	123
6	ARETE	New York, NY	201-500	462	301
7	TORQ	New York, NY	201-500	350	197
8	Flashpoint	New York, NY	201-500	259	119
9	Stroz Friedberg, A Levelblue Company	New York, NY	501-1,000	204	67
10	Certik	New York, NY	201-500	196	60
11	Deep Instinct	New York, NY	201-500	172	116
12	Harbor IT	New York, NY	201-500	160	36
13	CTS	New York	51-200	118	53
14	Cyberrisk Alliance	New York, NY	51-200	117	85
15	Brandshield	New York, NY	51-200	110	19
16	Morphisec	New York, NY	51-200	103	59
17	Oligo Security	New York, NY	51-200	100	21
18	Trail Of Bits	New York, NY	51-200	96	73
19	Strike	New York	51-200	84	31
20	Nopalcyber	New York, NY	51-200	76	28
21	Reasonlabs	New York	51-200	73	23
22	AXIO	New York, NY	51-200	64	31
23	Leadcomm Security	New York, NY	51-200	62	35
24	Securitybridge	New York, NY	51-200	59	38
25	Altourage	New York, NY	51-200	56	37

Showing 25 of 329 cybersecurity companies based in New York, United States

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Cybersecurity companies based in New York, United States at a glance

As of Aug 28, 2026

11-50Median size (employees)

New YorkLargest hub · 329 HQs

2,258Contacts with mobile numbers

15Emails re-verified in last 30 days

Companies by employee count

1-10

125

11-50

127

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

Cybersecurity companies by metro in the United States

Metro	Companies
Cybersecurity companies in New York	329
Cybersecurity companies in Austin	182
Cybersecurity companies in San Francisco	179
Cybersecurity companies in Washington	168
Cybersecurity companies in Atlanta	158
Cybersecurity companies in Houston	153
Cybersecurity companies in Miami	149

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 companies”, with match quality audited by blind human judging, and headquartered in New York, 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; 15 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 companies are in the directory?

The directory lists 329 cybersecurity companies based in New York, United States.

Which city has the most cybersecurity companies?

New York is the single most-represented city among the cybersecurity companies on the list.

How many contacts are available for cybersecurity companies?

The directory includes 9,110 professional contacts and 2,925 email addresses for the listed cybersecurity companies.

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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.