Company lists · Data refreshed September 2026

Top 20 Endpoint security consulting agencies based in New York, United States

RevenueBase identified 66 endpoint security consulting agencies headquartered in New York, United States as of September 2026 and tracks 455 professional contacts across them, including 121 with verified work emails. Across the United States, New York is the largest hub for this category.

This list covers endpoint security consulting agencies 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
66Companies
455Contacts tracked
121Verified emails
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The 20 largest endpoint security consulting agencies based in New York, United States

Ranked by team size
Top 20 of 66 endpoint security consulting agencies 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 agencies: 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Partial evidenceNew York, NY, United StatesHQ checked Sep 28, 2026201-500216 contacts →

Partial evidence

“T&M USA provides seamlessly integrated executive protection, investigative and consulting services.”

Source: RevenueBase Database · checked Sep 28, 2026
2Partial evidenceNew York, NY, United StatesHQ checked Sep 28, 202611-5038 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
3Indirect evidenceNew York, NY, United StatesHQ checked Sep 28, 202651-20021 contacts →

Indirect evidence

“Gotham Digital Science (GDS) was acquired in 2016 by Stroz Friedberg, an Aon company.”

Source: RevenueBase Database · checked Sep 28, 2026
4Indirect evidenceNew York, NY, United StatesHQ checked Sep 28, 202611-5016 contacts →

Indirect evidence

“Unit 221B is a threat disruption company delivering actionable threat intelligence and cybersecurity solutions that enable enterprises, law enforcement, and government agencies to…”

Source: RevenueBase Database · checked Sep 28, 2026
5Partial evidenceNew York, NY, United StatesHQ checked Sep 28, 202611-5014 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
6Partial evidenceNew York, NY, United StatesHQ checked Sep 28, 20261-109 contacts →

Partial evidence

“Our primary business is the digital security of your assets.”

Source: RevenueBase Database · checked Sep 28, 2026
7Partial evidenceNew York, NY, United StatesHQ checked Sep 28, 202611-508 contacts →

Partial evidence

“Whether you’re starting up a new business or you’re an established publicly‐traded company, Humble Monkey provides business technology consulting, support, and services to meet…”

Source: RevenueBase Database · checked Sep 28, 2026
8Indirect evidenceNew York, United StatesHQ checked Sep 28, 202611-508 contacts →

Indirect evidence

“Sayfer, where people and technology meet to overcome web3 and blockchain challenges.”

Source: RevenueBase Database · checked Sep 28, 2026
9Partial evidenceNew York, United StatesHQ checked Sep 28, 202611-504 contacts →

Partial evidence

“Velstadt is a cybersecurity provider focused on delivering both offensive and defensive security services.”

Source: RevenueBase Database · checked Sep 28, 2026
10Indirect evidenceNew York, NY, United StatesHQ checked Sep 28, 20261-103 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
11Partial evidenceNew York, NY, United StatesHQ checked Sep 28, 202611-503 contacts →

Partial evidence

“At Techumen, we simplify health care security.”

Source: RevenueBase Database · checked Sep 28, 2026
12Indirect evidenceNew York, NY, United StatesHQ checked Sep 28, 20261-103 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
13Partial evidenceNew York, United StatesHQ checked Sep 28, 20261-102 contacts →

Partial evidence

“Exec Security TSCM specializes in communications security sweeps, eavesdropping protection, and technical surveillance countermeasures (TSCM).”

Source: RevenueBase Database · checked Sep 28, 2026
14Partial evidenceNew York, United StatesHQ checked Sep 28, 202651-2002 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
15Strong evidenceNew York, NY, United StatesHQ checked Sep 28, 202611-502 contacts →

Strong evidence

“Serving all fifty states, ESM Global Consulting’s Mission is to redefine the IT and security consulting industry by offering an uncommon blend of technology and business resources…”

Source: RevenueBase Database · checked Sep 28, 2026
16Indirect evidenceNew York, NY, United StatesHQ checked Sep 28, 202611-501 contacts →

Indirect evidence

“Being born out of a global consultancy group we had established very close partnerships with the world’s leading vendors and still today we sit on many customer advisory boards.”

Source: RevenueBase Database · checked Sep 28, 2026
17Partial evidenceNew York, NY, United StatesHQ checked Sep 28, 20261-101 contacts →

Partial evidence

“We are US based privately held security consultancy firm.”

Source: RevenueBase Database · checked Sep 28, 2026
18Indirect evidenceNew York, NY, United StatesHQ checked Sep 28, 20261-101 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 28, 2026
19Partial evidenceNew York, United StatesHQ checked Sep 28, 20261-101 contacts →

Partial evidence

“BTblock is a technology and cybersecurity consultancy specialized in providing end-to-end security and auditing solutions, with a focus on servicing clients in the blockchain &…”

Source: RevenueBase Database · checked Sep 28, 2026
20Partial evidenceNew York, United StatesHQ checked Sep 28, 20261-101 contacts →

Partial evidence

“Cybersecurity & Data Privacy Compliance Solutions Expert Consulting Services for your technology-driven business world.”

Source: RevenueBase Database · checked Sep 28, 2026

Showing 20 of 66 endpoint security consulting agencies based in New York, United States

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

As of Sep 28, 2026
26.6%Verified-email coverage
6.9Average contacts per company
1-10Median size (employees)
Sep 28, 2026Page data refreshed

Companies by employee count

1-10
35
11-50
21
51-200
5
201-500
3
1,001-5,000
2

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 66 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 agencies, 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 agencies”. 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 agencies), 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 agencies, 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, 121 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.

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 agencies, 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 agencies are there based in New York, United States?

RevenueBase identified 66 endpoint security consulting agencies 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 agencies?

New York leads the United States with 66 headquartered companies, followed by Houston (52) and San Francisco (51).

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 121 verified decision-maker contacts tracked across these 66 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.