Company lists · Data refreshed September 2026

Top 15 Infrastructure security companies based in New York, United States

RevenueBase identified 141 infrastructure security companies headquartered in New York, United States as of September 2026 and tracks 2,849 professional contacts across them, including 953 with verified work emails. New York is the largest hub.

This list covers infrastructure security companies 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, how directly it supports the match, and when it was last checked. Data refreshed September 3, 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 HQ checked on every row Match evidence on every row Refreshed Sep 3, 2026 86% judged on-target in blind review
141Companies
2,849Contacts tracked
953Verified emails
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The 15 largest infrastructure security companies based in New York, United States

Ranked by team size
Top 15 of 141 infrastructure security companies based in New York, United States, ranked by team size, largest first. Data refreshed Sep 3, 2026. Evidence rates how directly each company's own description names infrastructure security companies: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#CompanyHeadquartersEmployeesContacts
1
Harbor ITIndirect evidence
New York, NY, United StatesHQ checked Sep 3, 2026201-500160

“We are not merely a provider that handles firewalls and answers calls.”

Source: company website · checked Sep 3, 2026
2
CTSIndirect evidence
New York, United StatesHQ checked Sep 3, 202651-200118

“CTS is an IT and Cybersecurity Solutions Provider dedicated to helping organizations, including commercial business, nonprofits, and schools, build secure, efficient, and…”

Source: company website · checked Sep 3, 2026
3
MorphisecIndirect evidence
New York, NY, United StatesHQ checked Sep 3, 202651-200103

“We empower organizations with resilient, self-healing capabilities that prevent and neutralize even the most advanced cyber threats.”

Source: company website · checked Sep 3, 2026
4
NopalcyberIndirect evidence
New York, NY, United StatesHQ checked Sep 3, 202651-20076

“NopalCyber makes cybersecurity manageable, affordable, reliable, and powerful for companies that need to be resilient and compliant.”

Source: company website · checked Sep 3, 2026
5
Eretmis INCIndirect evidence
New York, NY, United StatesHQ checked Sep 3, 2026n/a68
Source: company website · checked Sep 3, 2026
6
White Wings TechnologiesIndirect evidence
New York, NY, United StatesHQ checked Sep 3, 202651-20055

“White Wings Technologies is a forward-thinking IT solutions provider, specializing in cloud computing, cybersecurity, managed IT services, and strategic IT consulting.”

Source: company website · checked Sep 3, 2026
7
Port53Partial evidence
New York, NY, United StatesHQ checked Sep 3, 202651-20055

“Port53 Technologies is The Global Leader in Cisco-Based Managed Security Operations, helping organizations modernize and secure their digital environments through advanced…”

Source: company website · checked Sep 3, 2026
8New York, United StatesHQ checked Sep 3, 202651-20049

“Digital Edge is a New York-based team of engineering professionals passionate about digital transformation.”

Source: company website · checked Sep 3, 2026
9
OSECPartial evidence
New York, NY, United StatesHQ checked Sep 3, 202611-5038

“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: company website · checked Sep 3, 2026
10New York, United StatesHQ checked Sep 3, 202651-20028

“CipherTechs is now part of CyberMaxx, a tech-enabled cybersecurity service provider.”

Source: company website · checked Sep 3, 2026
11New York, NY, United StatesHQ checked Sep 3, 202611-5021

“Future-Ready Security for Today’s Decision-Makers.”

Source: company website · checked Sep 3, 2026
12
ACA AponixIndirect evidence
New York, NY, United StatesHQ checked Sep 3, 2026201-50019

“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: company website · checked Sep 3, 2026
13
CyberconvoyIndirect evidence
New York, United StatesHQ checked Sep 3, 202611-5017

“We’re the nemesis of evil hackers attempting to take control of your system so they can extort money.”

Source: company website · checked Sep 3, 2026
14
Unit 221bIndirect evidence
New York, NY, United StatesHQ checked Sep 3, 202611-5016

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

Source: company website · checked Sep 3, 2026
15
Wiznucleus, INCPartial evidence
New York, NY, United StatesHQ checked Sep 3, 202611-5016

“WizNucleus provides cyber & physical security solutions for mission-critical facilities, including nuclear and electric.”

Source: company website · checked Sep 3, 2026

Showing 15 of 141 infrastructure security companies based in New York, United States

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

As of Sep 3, 2026
11-50Median size (employees)
New YorkLargest hub · 141 HQs
Contacts with mobile numbers
Sep 3, 2026Data refreshed

Companies by employee count

1-10
55
11-50
57
51-200
19
201-500
7
501-1,000
1
1,001-5,000
1

Email recency for this list is measured across the whole United States list rather than this city, so it is reported there. Company counts and contact totals on this page are exact for New York, over 141 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 infrastructure security companies, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, 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 “infrastructure security companies”. Matching reads each company's description, not its industry code or its name.
What we exclude
Companies whose own description does not clearly place them among infrastructure security companies, 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 an evidence 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, 953 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 3, 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.

Infrastructure security companies by metro in the United States

Frequently asked

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

RevenueBase identified 141 infrastructure security companies 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?

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

Which city has the most infrastructure security companies?

New York leads with 141 headquartered companies, followed by Washington (105) and Houston (98).

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 953 verified decision-maker contacts tracked across these 141 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 3, 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.