Company lists · Data refreshed September 2026

Top 22 Ics security companies based in New York, United States

RevenueBase identified 55 ics security companies headquartered in New York, United States as of September 2026 and tracks 1,533 professional contacts across them, including 625 with verified work emails. Houston is the largest hub.

This list covers ics 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
55Companies
1,533Contacts tracked
625Verified emails
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The 22 largest ics security companies based in New York, United States

Ranked by team size
Top 22 of 55 ics 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 ics 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
DGA SecurityPartial evidence
New York, NY, United StatesHQ checked Sep 3, 2026201-500207

“Since 1969, thousands of businesses across the country have entrusted their protection to DGA Security.”

Source: company website · checked Sep 3, 2026
2
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
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
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
7
Agency CybersecurityPartial evidence
New York, NY, United StatesHQ checked Sep 3, 202651-20049

“Agency replaces traditional security and compliance headcount with AI without replacing your existing tools.”

Source: company website · checked Sep 3, 2026
8New 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
9
Salvador TechnologiesIndirect evidence
New York, NY, United StatesHQ checked Sep 3, 202611-5026

“When an attack or failure hits, every minute counts.”

Source: company website · checked Sep 3, 2026
10
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
11
TechgardensIndirect evidence
New York, NY, United StatesHQ checked Sep 3, 202611-509

“Techgardens is a systems integrator founded in 2009 and based in New York.”

Source: company website · checked Sep 3, 2026
12
Sayfer Cyber SecurityIndirect evidence
New York, United StatesHQ checked Sep 3, 202611-507

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

Source: company website · checked Sep 3, 2026
13
FiredomeIndirect evidence
New York, NY, United StatesHQ checked Sep 3, 202611-507

“Firedome, a cybersecurity trailblazer, specializes in detection and response solutions for networks and IoT devices tailored for enterprise settings.”

Source: company website · checked Sep 3, 2026
14
KopidionPartial evidence
New York, NY, United StatesHQ checked Sep 3, 20261-105

“Kopidion consists of highly qualified cyber operations and information security professionals.”

Source: company website · checked Sep 3, 2026
15
MSI NET INCIndirect evidence
New York, United StatesHQ checked Sep 3, 202611-505

“MSI Net Inc is a trusted provider of IT services and cybersecurity solutions, dedicated to helping businesses protect their digital assets and optimize technology performance.”

Source: company website · checked Sep 3, 2026
16
Nathanial RandIndirect evidence
New York, NY, United StatesHQ checked Sep 3, 202611-505

“Nathanial Rand, Inc.”

Source: company website · checked Sep 3, 2026
17
IndegyStrong evidence
New York, United StatesHQ checked Sep 3, 202651-2004

“Indegy, a leader in industrial cyber security, protects industrial control system (ICS) networks from cyber threats, malicious insiders and human error.”

Source: company website · checked Sep 3, 2026
18
Velstadt CybersecurityPartial evidence
New York, United StatesHQ checked Sep 3, 202611-504

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

Source: company website · checked Sep 3, 2026
19
BytiumIndirect evidence
New York, NY, United StatesHQ checked Sep 3, 20261-104

“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: company website · checked Sep 3, 2026
20
SecreliantIndirect evidence
New York, NY, United StatesHQ checked Sep 3, 20261-103

“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: company website · checked Sep 3, 2026
21
Ho'ike TechnologiesPartial evidence
New York, United StatesHQ checked Sep 3, 202611-501

“Ho'ike Technologies is a full service information security company that manages the cybersecurity needs of small and midsize businesses.”

Source: company website · checked Sep 3, 2026
22
CyvergenceIndirect evidence
New York, NY, United StatesHQ checked Sep 3, 20261-101

“At Cyvergence, our mission is to empower organizations by delivering state of the art cybersecurity products and services that fortify your digital ecosystem.”

Source: company website · checked Sep 3, 2026

Showing 22 of 55 ics security companies based in New York, United States

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

As of Sep 3, 2026
11-50Median size (employees)
HoustonLargest hub · 58 HQs
Contacts with mobile numbers
Sep 3, 2026Data refreshed

Companies by employee count

1-10
20
11-50
18
51-200
9
201-500
4
501-1,000
2
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 55 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 ics 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 “ics 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 ics 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, 625 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.

Frequently asked

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

RevenueBase identified 55 ics 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?

DGA Security, headquartered in New York, tops this list with the largest team on record.

Which city has the most ics security companies?

Houston leads with 58 headquartered companies, followed by New York (55) and Miami (39).

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 625 verified decision-maker contacts tracked across these 55 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.