Company lists · Data refreshed September 2026

Top 25 Endpoint security consulting firms based in New York, United States

Name: Endpoint security 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 101 companies tracked

RevenueBase identified 101 endpoint security consulting firms headquartered in New York, United States as of September 2026 and tracks 636 professional contacts across them, including 139 with verified work emails. Across the United States, New York is the largest hub for this category.

This list covers endpoint security 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 28, 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 28, 2026 86% judged on-target in blind review

101Companies

636Contacts tracked

139Verified emails

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The 25 largest endpoint security consulting firms based in New York, United States

Ranked by team size

Top 25 of 101 endpoint security consulting firms based in New York, United States, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to endpoint security 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	T&m Usa, LLC	Partial evidence	New York, NY, United StatesHQ checked Sep 28, 2026	201-500	216 contacts →
	Partial evidence “T&M USA provides seamlessly integrated executive protection, investigative and consulting services.” Source: RevenueBase Database · checked Sep 28, 2026
2	OSEC	Partial evidence	New York, NY, United StatesHQ checked Sep 28, 2026	11-50	38 contacts →
	Partial 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 28, 2026
3	Zecurion	Partial evidence	New York, NY, United StatesHQ checked Sep 28, 2026	51-200	34 contacts →
	Partial evidence “Established in 2001, Zecurion has emerged as a worldwide authority in IT security solutions, safeguarding the interests of more than corporate clients spanning across 70+…” Source: RevenueBase Database · checked Sep 28, 2026
4	TAG Infosphere	Indirect evidence	New York, NY, United StatesHQ checked Sep 28, 2026	11-50	22 contacts →
	Indirect evidence “TAG serves the cybersecurity community, primarily with enterprise, vendors, and venture capital.” Source: RevenueBase Database · checked Sep 28, 2026
5	Gotham Digital Science, A Stroz Friedberg Company	Indirect evidence	New York, NY, United StatesHQ checked Sep 28, 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 28, 2026
6	Narrowgate Security Agency	Partial evidence	New York, United StatesHQ checked Sep 28, 2026	1,001-5,000	18 contacts →
	Partial evidence “We provide analysis and design of Physical Security Systems (PSS) of high risk facilities and critical infrastructure.” Source: RevenueBase Database · checked Sep 28, 2026
7	Sphereny	Partial evidence	New York, NY, United StatesHQ checked Sep 28, 2026	11-50	14 contacts →
	Partial evidence “SphereNY is made up of seasoned professionals who have a passion for the Construction Industry and Security Awareness programs for all sectors.” Source: RevenueBase Database · checked Sep 28, 2026
8	Silent Breach	Indirect evidence	New York, NY, United StatesHQ checked Sep 28, 2026	11-50	12 contacts →
	Indirect evidence “At Silent Breach, we think like a hacker and defend like a pro.” Source: RevenueBase Database · checked Sep 28, 2026
9	Roundtable Solutions Security	Indirect evidence	New York, NY, United StatesHQ checked Sep 28, 2026	51-200	10 contacts →
	Indirect evidence “Founded in New York City in 1991, Roundtable Solutions has developed a reputation for providing clients with exceptional service, commensurate with risk, and therefore the perfect…” Source: RevenueBase Database · checked Sep 28, 2026
10	Stone Security Engineering	Partial evidence	New York, NY, United StatesHQ checked Sep 28, 2026	11-50	9 contacts →
	Partial evidence “Stone Security Engineering specializes in reducing risk through the application of knowledge and expertise in blast resistance and anti-terrorism design.” Source: RevenueBase Database · checked Sep 28, 2026
11	White Hack Labs	Partial evidence	New York, NY, United StatesHQ checked Sep 28, 2026	1-10	9 contacts →
	Partial evidence “Our primary business is the digital security of your assets.” Source: RevenueBase Database · checked Sep 28, 2026
12	Resonance Security	Partial evidence	New York, NY, United StatesHQ checked Sep 28, 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 28, 2026
13	Sayfer Cyber Security	Indirect evidence	New York, United StatesHQ checked Sep 28, 2026	11-50	8 contacts →
	Indirect evidence “Sayfer, where people and technology meet to overcome web3 and blockchain challenges.” Source: RevenueBase Database · checked Sep 28, 2026
14	MITG	Partial evidence	New York, NY, United StatesHQ checked Sep 28, 2026	1-10	7 contacts →
	Partial evidence “MITG exists because most businesses don't need another security vendor.” Source: RevenueBase Database · checked Sep 28, 2026
15	Krantz Secure Technologies	Partial evidence	New York, NY, United StatesHQ checked Sep 28, 2026	11-50	6 contacts →
	Partial evidence “Krantz Secure Technologies is one of the New York metropolitan area’s oldest and most trusted network and security services integrators.” Source: RevenueBase Database · checked Sep 28, 2026
16	Tokkats	Partial evidence	New York, NY, United StatesHQ checked Sep 28, 2026	1-10	5 contacts →
	Partial evidence “As an IT Consulting & services company, Tokkats empowers you to do what you do best by building the unseen infrastructure, fortifying CyberSecurity and deploy resilient…” Source: RevenueBase Database · checked Sep 28, 2026
17	Hacker Simulations	Partial evidence	New York, NY, United StatesHQ checked Sep 28, 2026	11-50	4 contacts →
	Partial evidence “Hacker Simulations delivers advanced penetration testing and offensive security services for organizations that require real assurance, not checkbox security.” Source: RevenueBase Database · checked Sep 28, 2026
18	Indegy	Partial evidence	New York, United StatesHQ checked Sep 28, 2026	51-200	4 contacts →
	Partial evidence “Indegy, a leader in industrial cyber security, protects industrial control system (ICS) networks from cyber threats, malicious insiders and human error.” Source: RevenueBase Database · checked Sep 28, 2026
19	Velstadt Cybersecurity	Partial evidence	New York, United StatesHQ checked Sep 28, 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 28, 2026
20	Bytium	Indirect evidence	New York, NY, United StatesHQ checked Sep 28, 2026	1-10	4 contacts →
	Indirect 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 28, 2026
21	Secreliant	Indirect evidence	New York, NY, United StatesHQ checked Sep 28, 2026	1-10	3 contacts →
	Indirect 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 28, 2026
22	Techumen, INC	Partial evidence	New York, NY, United StatesHQ checked Sep 28, 2026	11-50	3 contacts →
	Partial evidence “At Techumen, we simplify health care security.” Source: RevenueBase Database · checked Sep 28, 2026
23	Brotherskeep	Indirect evidence	New York, NY, United StatesHQ checked Sep 28, 2026	1-10	3 contacts →
	Indirect 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 28, 2026
24	D-Riskcyber LLC	Partial evidence	New York, United StatesHQ checked Sep 28, 2026	51-200	2 contacts →
	Partial evidence “d-RiskCyber is a global consulting firm headquartered in New York City and specializing in cybersecurity-by-design and data-protection-by-design solutions.” Source: RevenueBase Database · checked Sep 28, 2026
25	Coreblox	Indirect evidence	New York, NY, United StatesHQ checked Sep 28, 2026	11-50	2 contacts →
	Indirect evidence “CoreBlox LLC is company founded in June 2005 in New England, and now headquartered in New York City.” Source: RevenueBase Database · checked Sep 28, 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: endpoint security 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 endpoint security consulting firms.
Partial evidence: Its own public description names part of endpoint security consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name endpoint security 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 101 endpoint security consulting firms based in New York, United States

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Endpoint security consulting firms based in New York, United States at a glance

As of Sep 28, 2026

21.9%Verified-email coverage

6.3Average contacts per company

1-10Median size (employees)

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

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 101 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 endpoint security 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 “endpoint security 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 endpoint security 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 endpoint security 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, 139 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 28, 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.

Endpoint security 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 endpoint security 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 endpoint security consulting firms are there based in New York, United States?

RevenueBase identified 101 endpoint security 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?

T&m Usa, LLC, headquartered in New York, tops this list with the largest team on record.

Which city in the United States has the most endpoint security consulting firms?

New York leads the United States with 101 headquartered companies, followed by Atlanta (73) and Austin (73).

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 139 verified decision-maker contacts tracked across these 101 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 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 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.