Company lists · Data refreshed September 2026

Top 24 Corporate security consulting companies based in New York, United States

Name: Corporate security consulting companies 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 27, 2026 148 companies tracked

RevenueBase identified 148 company matches for corporate security consulting companies associated with New York, United States as of September 2026 and tracks 5,228 professional contacts across them, including 944 with verified work emails. Across the United States, New York is the largest hub for this category.

This list covers company matches for corporate security consulting companies 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 27, 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 27, 2026 How this list was built

148Companies

5,228Contacts tracked

944Verified emails

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The 24 largest corporate security consulting companies based in New York, United States

Ranked by team size

Top 24 of 148 company matches for corporate security consulting companies based in New York, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 27, 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	Guardsmark	Exact match	New York, NY, United StatesHQ recorded Sep 27, 2026	10001+	1,375 contacts →
	Exact match “Guardsmark, LLC provides security services.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
2	MSA Security	Exact match	New York, NY, United StatesHQ recorded Sep 27, 2026	10001+	571 contacts →
	Exact match “Allied Universal Enhanced Protection Services delivers unrivaled threat mitigation expertise for government and business entities worldwide.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
3	Mulligan Security	Exact match	New York, NY, United StatesHQ recorded Sep 27, 2026	501-1,000	519 contacts →
	Exact match “Mulligan is a Manhattan-based provider of the finest security and fire safety professionals available.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
4	K2 Integrity	Exact match	New York, NY, United StatesHQ recorded Sep 27, 2026	201-500	311 contacts →
	Exact match “K2 Integrity is a global risk management company dedicated to helping organizations across both the public and private sectors protect their assets, reputation, and operations and…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
5	Guidepost Solutions	Exact match	New York, NY, United StatesHQ recorded Sep 27, 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 27, 2026 · View company records in RevenueBase
6	T&m Usa, LLC	Exact match	New York, NY, United StatesHQ recorded Sep 27, 2026	201-500	216 contacts →
	Exact match “T&M USA provides seamlessly integrated executive protection, investigative and consulting services.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
7	Silverseal	Exact match	New York, NY, United StatesHQ recorded Sep 27, 2026	501-1,000	159 contacts →
	Exact match “Silverseal is a comprehensive security solutions firm with worldwide affiliations that can provide global security services in a highly professional manner.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
8	Excel Security Corporation	Exact match	New York, NY, United StatesHQ recorded Sep 27, 2026	501-1,000	120 contacts →
	Exact match “Excel Security Corp.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
9	AJ Squared Security	Exact match	New York, NY, United StatesHQ recorded Sep 27, 2026	201-500	82 contacts →
	Exact match “AJ Squared Security, Inc.(AJ2), is a privately owned security organization founded in May 2003 and incorporated in November 2003.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
10	Gmsc Security	Exact match	New York, United StatesHQ recorded Sep 27, 2026	501-1,000	82 contacts →
	Exact match “For over 30 years GMSC has been securing high profile buildings and offices across New York and Chicago.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
11	Security USA INC	Exact match	New York, NY, United StatesHQ recorded Sep 27, 2026	1,001-5,000	82 contacts →
	Exact match “Security USA®, Inc.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
12	Torchstone Global	Exact match	New York, NY, United StatesHQ recorded Sep 27, 2026	51-200	77 contacts →
	Exact match “TorchStone is a discreet risk mitigation and security advisory firm serving the unique needs of the world’s leading organizations and individuals.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
13	Integrated Security Services	Exact match	New York, NY, United StatesHQ recorded Sep 27, 2026	201-500	72 contacts →
	Exact match “Integrated Security Services, Inc.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
14	Global OPS	Exact match	New York, NY, United StatesHQ recorded Sep 27, 2026	201-500	70 contacts →
	Exact match “At GLOBAL OPS, we specialize in creating and implementing tailored security solutions that cater to the unique needs of our diverse clientele.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
15	City Safe Partners	Exact match	New York, NY, United StatesHQ recorded Sep 27, 2026	201-500	68 contacts →
	Exact match “At CITY SAFE PARTNERS SECURITY, we create solutions and put systems in place to ensure that people and businesses are secure.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
16	Insite Risk Management	Exact match	New York, NY, United StatesHQ recorded Sep 27, 2026	51-200	63 contacts →
	Exact match “Effective risk management requires a holistic process.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
17	A&h Security Services	Exact match	New York, NY, United StatesHQ recorded Sep 27, 2026	1,001-5,000	60 contacts →
	Exact match “A&H Security Services, is a certified NYC MBE security services provider who makes a difference in our community.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
18	Knight Security NY	Exact match	New York, NY, United StatesHQ recorded Sep 27, 2026	51-200	36 contacts →
	Exact match “SECURITY.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
19	Polaris Corporate Risk Management	Exact match	New York, NY, United StatesHQ recorded Sep 27, 2026	51-200	27 contacts →
	Exact match “Bringing more than 50 years of global security and investigations experience, Polaris is an industry leader in the corporate risk management space.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
20	SI Global Partners	Exact match	New York, NY, United StatesHQ recorded Sep 27, 2026	11-50	22 contacts →
	Exact match “SI Global Partners is an independent global investigation and security consulting firm founded in 2021.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
21	Gotham Digital Science, A Stroz Friedberg Company	Exact match	New York, NY, United StatesHQ recorded Sep 27, 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 27, 2026 · View company records in RevenueBase
22	Ddcues LLC	Exact match	New York, United StatesHQ recorded Sep 27, 2026	51-200	18 contacts →
	Exact match “DDCues is a national risk management firm committed to protecting people, securing infrastructure, and defending the Nation.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
23	Narrowgate Security Agency	Exact match	New York, United StatesHQ recorded Sep 27, 2026	1,001-5,000	18 contacts →
	Exact match “We provide analysis and design of Physical Security Systems (PSS) of high risk facilities and critical infrastructure.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
24	Unity Building Security	Exact match	New York, NY, United StatesHQ recorded Sep 27, 2026	201-500	17 contacts →
	Exact match “NEVER COMPROMISE WHEN IT COMES TO PROTECTION Under the leadership of Dennis J.” Recorded in the RevenueBase company graph · Sep 27, 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 “corporate security consulting companies”. 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 148 corporate security consulting companies based in New York, United States

See the full list, filter by size, metro and specialty, and access 944 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Corporate security consulting companies based in New York, United States at a glance

As of Sep 27, 2026

18.1%Verified-email coverage

35.3Average contacts per company

11-50Median size (employees)

Sep 27, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

10001+

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 148 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 “corporate security consulting companies” 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 944 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 27, 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.

Corporate security consulting companies 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 “corporate security consulting companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many corporate security consulting companies are there based in New York, United States?

RevenueBase identified 148 company matches for corporate security consulting companies 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?

Guardsmark 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 corporate security consulting companies?

New York leads the United States with 160 company records, followed by Houston (100) and Los Angeles (91).

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 944 professional contacts with verified work emails tracked across these 148 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 27, 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.