Company lists · Data refreshed September 2026

Top 20 Small cybersecurity companies based in New York, United States

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

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 129 companies tracked

RevenueBase identified 129 company matches for small cybersecurity companies associated with New York, United States as of September 2026 and tracks 1,983 professional contacts across them, including 772 with verified work emails. Across the United States, New York is the largest hub for this category.

This list covers company matches for small cybersecurity companies associated with New York, United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 21, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 21, 2026 How this list was built

129Companies

1,983Contacts tracked

772Verified emails

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The 20 largest small cybersecurity companies based in New York, United States

Ranked by team size

Top 20 of 129 company matches for small cybersecurity companies based in New York, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 21, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Stroz Friedberg, A Levelblue Company	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	501-1,000	206 contacts →
	Exact match “Stroz Friedberg is now LevelBlue, the world's largest pure-play Managed Security Services Provider (MSSP).” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
2	AGIO	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	201-500	200 contacts →
	Exact match “Agio is a hybrid cybersecurity and managed IT organization that combines predictive intelligence with human brilliance to empower clients with next-generation cyber protection and…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
3	Harbor IT	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	201-500	163 contacts →
	Exact match “Harbor IT helps organizations secure, operate, and scale through integrated IT, cybersecurity, AI, and cloud services.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
4	Nopalcyber	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	51-200	76 contacts →
	Exact match “NopalCyber makes cybersecurity manageable, affordable, reliable, and powerful for companies that need to be resilient and compliant.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
5	Eretmis INC	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	n/a	66 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
6	Nsknox	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	11-50	57 contacts →
	Exact match “nsKnox is a cybersecurity company focused on Corporate Payment Security, founded and led by Alon Cohen, Founder & former CEO of CyberArk (NASDAQ: CYBR).” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
7	BIG Idea Technology	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	11-50	57 contacts →
	Exact match “Big Idea Technology manages IT for small businesses headquartered in the New York City metropolitan area.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
8	Port53	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	51-200	55 contacts →
	Exact match “Port53 Technologies is The Global Leader in Cisco-Based Managed Security Operations, helping organizations modernize and secure their digital environments through advanced…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
9	White Wings Technologies	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	51-200	54 contacts →
	Exact match “White Wings Technologies is a forward-thinking IT solutions provider, specializing in cloud computing, cybersecurity, managed IT services, and strategic IT consulting.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
10	OSEC	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	11-50	38 contacts →
	Exact match “We're the security consultants Fortune 500s call when they're in real trouble, the ones who find what others miss, who speak CEO and CISO fluently.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
11	Ciphertechs A Cybermaxx Company	Exact match	New York, United StatesHQ recorded Sep 21, 2026	51-200	28 contacts →
	Exact match “CipherTechs is now part of CyberMaxx, a tech-enabled cybersecurity service provider.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
12	RCS Professional Services	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	11-50	27 contacts →
	Exact match “Small Business IT and Cybersecurity Solutions throughout the United States.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
13	Riverstrong	Exact match	New York, United StatesHQ recorded Sep 21, 2026	11-50	25 contacts →
	Exact match “Riverstrong - your trusted partner in IT and cybersecurity managed services.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
14	ACA Aponix	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	201-500	19 contacts →
	Exact match “ACA Aponix, a division of ACA Group, provides cybersecurity and technology risk assessments, vendor and M&A diligence services, network testing, and advisory services.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
15	Cohere Cyber Secure	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	51-200	17 contacts →
	Exact match “Cohere offers managed security and IT infrastructure services all under one roof.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
16	Unit 221b	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	11-50	16 contacts →
	Exact match “Unit 221B is a threat disruption company delivering actionable threat intelligence and cybersecurity solutions that enable enterprises, law enforcement, and government agencies to…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
17	Smartit LLC	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	1-10	12 contacts →
	Exact match “smartIT provides top-notch, hassle-free, user-friendly, one-ticket resolution, reliable, on-site and remote IT and Infosec services to New York Metro businesses, organizations…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
18	Cyberconvoy	Exact match	New York, United StatesHQ recorded Sep 21, 2026	11-50	12 contacts →
	Exact match “We’re the nemesis of evil hackers attempting to take control of your system so they can extort money.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
19	White Hack Labs	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	1-10	9 contacts →
	Exact match “Our primary business is the digital security of your assets.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
20	Resonance Security	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	11-50	9 contacts →
	Exact match “Resonance Security offers full spectrum cybersecurity aggregation software for institutions and individuals that makes protecting against any cybersecurity threat effortless no…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “small cybersecurity companies”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 20 of 129 small cybersecurity companies based in New York, United States

See the full list, filter by size, metro and specialty, and access 772 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Small cybersecurity companies based in New York, United States at a glance

As of Sep 21, 2026

38.9%Verified-email coverage

15.4Average contacts per company

11-50Median size (employees)

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

Email recency for this list is measured across the whole United States list rather than for New York, so it is reported there. Company counts and contact totals on this page are exact for New York, over 129 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Company records associated with New York, United States whose business descriptions match “small cybersecurity companies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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: Every displayed company carries at least one verified work email. RevenueBase tracks 772 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 21, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Small cybersecurity companies by metro in the United States

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “small cybersecurity companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many small cybersecurity companies are there based in New York, United States?

RevenueBase identified 129 company matches for small cybersecurity companies associated with New York, United States as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Stroz Friedberg, A Levelblue Company tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city in the United States has the most small cybersecurity companies?

New York leads the United States with 129 company records, followed by Atlanta (84) and Austin (83).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 772 professional contacts with verified work emails tracked across these 129 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 21, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 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 with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.