Company lists · Data refreshed September 2026

Top 23 Cybersecurity professional services based in New York, United States

Name: Cybersecurity professional services 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 238 companies tracked

RevenueBase identified 238 company matches for cybersecurity professional services associated with New York, United States as of September 2026 and tracks 4,140 professional contacts across them, including 1,692 with verified work emails. Across the United States, New York is the largest hub for this category.

This list covers company matches for cybersecurity professional services 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

238Companies

4,140Contacts tracked

1,692Verified emails

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The 23 largest cybersecurity professional services based in New York, United States

Ranked by team size

Top 23 of 238 company matches for cybersecurity professional services 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	Bluevoyant	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	501-1,000	683 contacts →
	Exact match “BlueVoyant’s Cyber Defense Platform (CDP) integrates MDR, TPRM, and DRP into a seamless, scalable solution.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
2	XTIUM	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	501-1,000	478 contacts →
	Exact match “XTIUM, created through the business combination of ATSG and Evolve IP, delivers a modern security-first approach to the managed IT services experience.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
3	Kraft & Kennedy, INC	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	51-200	219 contacts →
	Exact match “Kraft Kennedy is a multidisciplinary technology and management consulting firm.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
4	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
5	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
6	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
7	Cyberrisk Alliance	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	51-200	119 contacts →
	Exact match “CyberRisk Alliance (CRA) was formed to help cybersecurity professionals face the challenges and obstacles that threaten the success and prosperity of their organizations.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
8	Cyber City	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	11-50	80 contacts →
	Exact match “Cyber City inc.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
9	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
10	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
11	Revelsi	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	51-200	65 contacts →
	Exact match “RevelSI is a global cybersecurity, AI, software, and infrastructure services organization.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
12	Altourage	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	51-200	58 contacts →
	Exact match “Altourage is a New York City-based managed IT and cybersecurity provider built for organizations that operate in high-stakes, fast-moving environments.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
13	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
14	Rhymetec	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	11-50	56 contacts →
	Exact match “Rhymetec delivers premium cybersecurity and data privacy solutions for modern SaaS businesses, combining human expertise with innovative technology.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
15	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
16	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
17	Tabush Group	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	11-50	52 contacts →
	Exact match “Tabush Group is your trusted IT partner, simplifying the complexities of IT by providing professional service firms with cloud and managed IT solutions that offer security…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
18	Proven Data	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	11-50	38 contacts →
	Exact match “Founded in 2011, Proven Data has consistently evolved to meet the growing needs of our clients.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
19	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
20	Edelta Consulting	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	51-200	33 contacts →
	Exact match “eDelta Consulting is a professional services firm at the intersection of AI innovation and governance, risk, and compliance (GRC).” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
21	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
22	Deeptech, INC	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	11-50	26 contacts →
	Exact match “DeepTech, your IT solutions partner, is redefining how IT is managed by exceeding the level of service that companies have come to expect from traditional Managed Service…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
23	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

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 “cybersecurity professional services”. 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 23 of 238 cybersecurity professional services based in New York, United States

See the full list, filter by size, metro and specialty, and access 1,692 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Cybersecurity professional services based in New York, United States at a glance

As of Sep 21, 2026

40.9%Verified-email coverage

17.4Average contacts per company

11-50Median size (employees)

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

116

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 238 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 “cybersecurity professional services” 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 1,692 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.

Cybersecurity professional services 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 “cybersecurity professional services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many cybersecurity professional services are there based in New York, United States?

RevenueBase identified 238 company matches for cybersecurity professional services 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?

Bluevoyant 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 cybersecurity professional services?

New York leads the United States with 238 company records, followed by Houston (148) and Washington (143).

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 1,692 professional contacts with verified work emails tracked across these 238 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.