Company lists · Data refreshed September 2026

Top 24 Government cybersecurity consulting firms based in New York, United States

Name: Government 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 28, 2026 138 companies tracked

RevenueBase identified 138 company matches for government cybersecurity consulting firms associated with New York, United States as of September 2026 and tracks 1,435 professional contacts across them, including 591 with verified work emails. Across the United States, New York is the largest hub for this category.

This list covers company matches for government cybersecurity consulting firms 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 28, 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 28, 2026 How this list was built

138Companies

1,435Contacts tracked

591Verified emails

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The 24 largest government cybersecurity consulting firms based in New York, United States

Ranked by team size

Top 24 of 138 company matches for government cybersecurity consulting firms based in New York, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 28, 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	Guidepost Solutions	Exact match	New York, NY, United StatesHQ recorded Sep 28, 2026	201-500	268 contacts →
	Exact match “We stand at the forefront of leadership, insight, and guidance in a world marked by complexity and uncertainty.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
2	Harbor IT	Exact match	New York, NY, United StatesHQ recorded Sep 28, 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 28, 2026 · View company records in RevenueBase
3	Nopalcyber	Exact match	New York, NY, United StatesHQ recorded Sep 28, 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 28, 2026 · View company records in RevenueBase
4	Eretmis INC	Exact match	New York, NY, United StatesHQ recorded Sep 28, 2026	n/a	66 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
5	Revelsi	Exact match	New York, NY, United StatesHQ recorded Sep 28, 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 28, 2026 · View company records in RevenueBase
6	Salus GRC	Exact match	New York, NY, United StatesHQ recorded Sep 28, 2026	51-200	48 contacts →
	Exact match “At Salus GRC, we offer more than just compliance and cybersecurity services – we provide a personalized commitment to your success.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
7	OSEC	Exact match	New York, NY, United StatesHQ recorded Sep 28, 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 28, 2026 · View company records in RevenueBase
8	Ciphertechs A Cybermaxx Company	Exact match	New York, United StatesHQ recorded Sep 28, 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 28, 2026 · View company records in RevenueBase
9	TAG Infosphere	Exact match	New York, NY, United StatesHQ recorded Sep 28, 2026	11-50	22 contacts →
	Exact match “TAG serves the cybersecurity community, primarily with enterprise, vendors, and venture capital.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
10	Gotham Digital Science, A Stroz Friedberg Company	Exact match	New York, NY, United StatesHQ recorded Sep 28, 2026	51-200	21 contacts →
	Exact match “Gotham Digital Science (GDS) was acquired in 2016 by Stroz Friedberg, an Aon company.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
11	ACA Aponix	Exact match	New York, NY, United StatesHQ recorded Sep 28, 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 28, 2026 · View company records in RevenueBase
12	Unit 221b	Exact match	New York, NY, United StatesHQ recorded Sep 28, 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 28, 2026 · View company records in RevenueBase
13	Ia-Tech Center	Exact match	New York, NY, United StatesHQ recorded Sep 28, 2026	11-50	14 contacts →
	Exact match “IA-TechCenter is a leading IT- Consulting firm composed of experts specializing in Program, and Project Management Services.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
14	Silent Breach	Exact match	New York, NY, United StatesHQ recorded Sep 28, 2026	11-50	12 contacts →
	Exact match “At Silent Breach, we think like a hacker and defend like a pro.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
15	Octillo	Exact match	New York, United StatesHQ recorded Sep 28, 2026	11-50	11 contacts →
	Exact match “Octillo is one of the few law firms in the country focused exclusively on data security and privacy, incident response, and litigation.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
16	RGS Global Advisors	Exact match	New York, NY, United StatesHQ recorded Sep 28, 2026	11-50	11 contacts →
	Exact match “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 &…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
17	Compciti Business Solutions, INC	Exact match	New York, NY, United StatesHQ recorded Sep 28, 2026	11-50	11 contacts →
	Exact match “CompCiti has been providing IT auditing, compliance, security and management services for over 20 years.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
18	Techgardens	Exact match	New York, NY, United StatesHQ recorded Sep 28, 2026	11-50	9 contacts →
	Exact match “Techgardens is a systems integrator founded in 2009 and based in New York.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
19	Resonance Security	Exact match	New York, NY, United StatesHQ recorded Sep 28, 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 28, 2026 · View company records in RevenueBase
20	Seaglass Technology, LLC	Exact match	New York, NY, United StatesHQ recorded Sep 28, 2026	11-50	8 contacts →
	Exact match “At SeaGlass Technology we specialize using our proprietary methodology and processes developed from our VCISO team and experienced tech teams approach to managing Hedge Funds IT &…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
21	Sayfer Cyber Security	Exact match	New York, United StatesHQ recorded Sep 28, 2026	11-50	8 contacts →
	Exact match “Sayfer, where people and technology meet to overcome web3 and blockchain challenges.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
22	Holistic Cyber Holisticyber	Exact match	New York, NY, United StatesHQ recorded Sep 28, 2026	51-200	8 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
23	MITG	Exact match	New York, NY, United StatesHQ recorded Sep 28, 2026	1-10	7 contacts →
	Exact match “MITG exists because most businesses don't need another security vendor.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
24	Sniper Watch	Exact match	New York, NY, United StatesHQ recorded Sep 28, 2026	11-50	7 contacts →
	Exact match “Sniper Watch is an AI-powered cybersecurity and technology advisory + tactical deployment firm that helps organizations protect revenue, reduce risk, and scale operations in…” Recorded in the RevenueBase company graph · Sep 28, 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 “government cybersecurity consulting firms”. 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 24 of 138 government cybersecurity consulting firms based in New York, United States

See the full list, filter by size, metro and specialty, and access 591 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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

As of Sep 28, 2026

41.2%Verified-email coverage

10.4Average contacts per company

1-10Median size (employees)

Sep 28, 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 138 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 “government cybersecurity consulting firms” 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 591 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 28, 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.

Government cybersecurity consulting firms 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 “government cybersecurity consulting firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

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

RevenueBase identified 138 company matches for government cybersecurity consulting firms 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?

Guidepost Solutions 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 government cybersecurity consulting firms?

New York leads the United States with 154 company records, followed by Washington (144) and Atlanta (105).

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 591 professional contacts with verified work emails tracked across these 138 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 28, 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.