Company lists · Data refreshed September 2026

Top 25 Nonprofit cybersecurity consulting firms based in New York, United States

Name: Nonprofit cybersecurity consulting firms 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 29, 2026 116 companies tracked

RevenueBase identified 116 nonprofit cybersecurity consulting firms headquartered in New York, United States as of September 2026 and tracks 1,548 professional contacts across them, including 249 with verified work emails. Across the United States, New York is the largest hub for this category.

This list covers nonprofit cybersecurity consulting firms headquartered in New York, United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 29, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 29, 2026 86% judged on-target in blind review

116Companies

1,548Contacts tracked

249Verified emails

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The 25 largest nonprofit cybersecurity consulting firms based in New York, United States

Ranked by team size

Top 25 of 116 nonprofit cybersecurity consulting firms based in New York, United States, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to nonprofit cybersecurity consulting firms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Offsec	Partial evidence	New York, NY, United StatesHQ checked Sep 29, 2026	201-500	879 contacts →
	Partial evidence “Empowering the world to fight cyber threats with indispensable cybersecurity skills and resources.” Source: RevenueBase Database · checked Sep 29, 2026
2	Eretmis INC	Indirect evidence	New York, NY, United StatesHQ checked Sep 29, 2026	n/a	66 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 29, 2026
3	OSEC	Indirect evidence	New York, NY, United StatesHQ checked Sep 29, 2026	11-50	38 contacts →
	Indirect evidence “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.” Source: RevenueBase Database · checked Sep 29, 2026
4	Ciphertechs A Cybermaxx Company	Partial evidence	New York, United StatesHQ checked Sep 29, 2026	51-200	28 contacts →
	Partial evidence “CipherTechs is now part of CyberMaxx, a tech-enabled cybersecurity service provider.” Source: RevenueBase Database · checked Sep 29, 2026
5	Ventucom LLC	Partial evidence	New York, NY, United StatesHQ checked Sep 29, 2026	11-50	22 contacts →
	Partial evidence “Our mission is to deliver tailored IT services to nonprofit and social impact organizations, leveraging technologies that optimize efficiency, enhance collaboration, and fortify…” Source: RevenueBase Database · checked Sep 29, 2026
6	TAG Infosphere	Partial evidence	New York, NY, United StatesHQ checked Sep 29, 2026	11-50	22 contacts →
	Partial evidence “TAG serves the cybersecurity community, primarily with enterprise, vendors, and venture capital.” Source: RevenueBase Database · checked Sep 29, 2026
7	Gotham Digital Science, A Stroz Friedberg Company	Indirect evidence	New York, NY, United StatesHQ checked Sep 29, 2026	51-200	21 contacts →
	Indirect evidence “Gotham Digital Science (GDS) was acquired in 2016 by Stroz Friedberg, an Aon company.” Source: RevenueBase Database · checked Sep 29, 2026
8	ACA Aponix	Partial evidence	New York, NY, United StatesHQ checked Sep 29, 2026	201-500	19 contacts →
	Partial evidence “ACA Aponix, a division of ACA Group, provides cybersecurity and technology risk assessments, vendor and M&A diligence services, network testing, and advisory services.” Source: RevenueBase Database · checked Sep 29, 2026
9	Smartit LLC	Indirect evidence	New York, NY, United StatesHQ checked Sep 29, 2026	1-10	12 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 29, 2026
10	Octillo	Indirect evidence	New York, United StatesHQ checked Sep 29, 2026	11-50	11 contacts →
	Indirect evidence “Octillo is one of the few law firms in the country focused exclusively on data security and privacy, incident response, and litigation.” Source: RevenueBase Database · checked Sep 29, 2026
11	RGS Global Advisors	Partial evidence	New York, NY, United StatesHQ checked Sep 29, 2026	11-50	11 contacts →
	Partial evidence “Top notch services at reasonable cost RGS Global Advisors has a wealth of internal audit, FDICIA and SOX testing, remediation, consultancy, BSA/AML/OFAC, IT/IS/Cybersecurity &…” Source: RevenueBase Database · checked Sep 29, 2026
12	Cybersecurity Reach Foundation	Partial evidence	New York, NY, United StatesHQ checked Sep 29, 2026	1-10	10 contacts →
	Partial evidence “Empowering individuals and organizations to navigate the digital landscape securely through software development, research, and cybersecurity initiatives.” Source: RevenueBase Database · checked Sep 29, 2026
13	Resonance Security	Partial evidence	New York, NY, United StatesHQ checked Sep 29, 2026	11-50	9 contacts →
	Partial evidence “Resonance Security offers full spectrum cybersecurity aggregation software for institutions and individuals that makes protecting against any cybersecurity threat effortless no…” Source: RevenueBase Database · checked Sep 29, 2026
14	Sayfer Cyber Security	Indirect evidence	New York, United StatesHQ checked Sep 29, 2026	11-50	8 contacts →
	Indirect evidence “Sayfer, where people and technology meet to overcome web3 and blockchain challenges.” Source: RevenueBase Database · checked Sep 29, 2026
15	Holistic Cyber Holisticyber	Indirect evidence	New York, NY, United StatesHQ checked Sep 29, 2026	51-200	8 contacts →
	Indirect evidence “HolistiCyber’s mission is to assist corporations in defending themselves from the new phase of evolution in Cyber threats - not only in volume, but in the level of sophistication.” Source: RevenueBase Database · checked Sep 29, 2026
16	MITG	Indirect evidence	New York, NY, United StatesHQ checked Sep 29, 2026	1-10	7 contacts →
	Indirect evidence “MITG exists because most businesses don't need another security vendor.” Source: RevenueBase Database · checked Sep 29, 2026
17	Sniper Watch	Partial evidence	New York, NY, United StatesHQ checked Sep 29, 2026	11-50	7 contacts →
	Partial evidence “Sniper Watch is an AI-powered cybersecurity and technology advisory + tactical deployment firm that helps organizations protect revenue, reduce risk, and scale operations in…” Source: RevenueBase Database · checked Sep 29, 2026
18	Innercircle Technology Advisors INC	Indirect evidence	New York, NY, United StatesHQ checked Sep 29, 2026	11-50	5 contacts →
	Indirect evidence “InnerCircle Technology Advisors is a New York City based Information Technology firm.” Source: RevenueBase Database · checked Sep 29, 2026
19	Kopidion	Indirect evidence	New York, NY, United StatesHQ checked Sep 29, 2026	1-10	5 contacts →
	Indirect evidence “Kopidion consists of highly qualified cyber operations and information security professionals.” Source: RevenueBase Database · checked Sep 29, 2026
20	Compuwork	Indirect evidence	New York, NY, United StatesHQ checked Sep 29, 2026	11-50	5 contacts →
	Indirect evidence “Most organizations face growing compliance demands but lack an IT partner who truly understands them.” Source: RevenueBase Database · checked Sep 29, 2026
21	The Affila Group	Partial evidence	New York, NY, United StatesHQ checked Sep 29, 2026	1-10	4 contacts →
	Partial evidence “The Affila Group is a trusted international consulting firm with operations in New York City, Mexico City, Medellín, San José, and Guayaquil, delivering cutting-edge government…” Source: RevenueBase Database · checked Sep 29, 2026
22	Velstadt Cybersecurity	Partial evidence	New York, United StatesHQ checked Sep 29, 2026	11-50	4 contacts →
	Partial evidence “Velstadt is a cybersecurity provider focused on delivering both offensive and defensive security services.” Source: RevenueBase Database · checked Sep 29, 2026
23	Bytium	Partial evidence	New York, NY, United StatesHQ checked Sep 29, 2026	1-10	4 contacts →
	Partial evidence “Bytium LLC is a U.S-registered cybersecurity and IT solutions firm dedicated to helping organizations protect their information assets and maintain operational resilience.” Source: RevenueBase Database · checked Sep 29, 2026
24	Secreliant	Partial evidence	New York, NY, United StatesHQ checked Sep 29, 2026	1-10	3 contacts →
	Partial evidence “SecReliant is managed by a seasoned team – with backgrounds in cybersecurity, technology, blockchain enabled technology, and service in the armed forces – that is passionate…” Source: RevenueBase Database · checked Sep 29, 2026
25	Brotherskeep	Partial evidence	New York, NY, United StatesHQ checked Sep 29, 2026	1-10	3 contacts →
	Partial evidence “BrothersKeep is a boutique cybersecurity services firm with offices in New York and Israel, providing a full portfolio of enterprise-class cybersecurity solutions to businesses of…” Source: RevenueBase Database · checked Sep 29, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: nonprofit cybersecurity consulting firms. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names nonprofit cybersecurity consulting firms.
Partial evidence: Its own public description names part of nonprofit cybersecurity consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name nonprofit cybersecurity consulting firms. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 116 nonprofit cybersecurity consulting firms based in New York, United States

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Nonprofit cybersecurity consulting firms based in New York, United States at a glance

As of Sep 29, 2026

16.1%Verified-email coverage

13.3Average contacts per company

1-10Median size (employees)

Sep 29, 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 116 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among nonprofit cybersecurity consulting firms, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in New York, United States whose own description of what they do matches “nonprofit cybersecurity consulting firms”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names nonprofit cybersecurity consulting firms), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among nonprofit cybersecurity consulting firms, and records with no verified work email. Companies headquartered outside New York are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 249 across the full list. 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 29, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Nonprofit cybersecurity consulting firms by metro in the United States

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names nonprofit cybersecurity consulting firms, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many nonprofit cybersecurity consulting firms are there based in New York, United States?

RevenueBase identified 116 nonprofit cybersecurity consulting firms headquartered in New York, United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Offsec, headquartered in New York, tops this list with the largest team on record.

Which city in the United States has the most nonprofit cybersecurity consulting firms?

New York leads the United States with 116 headquartered companies, followed by Washington (101) and Atlanta (92).

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 249 verified decision-maker contacts tracked across these 116 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 29, 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 Smart Search, 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.