Company lists · Data refreshed September 2026

Top 18 Infrastructure security assessment companies based in New York, United States

RevenueBase identified 45 infrastructure security assessment companies headquartered in New York, United States as of September 2026 and tracks 318 professional contacts across them, including 93 with verified work emails. Across the United States, New York is the largest hub for this category.

This list covers infrastructure security assessment 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, 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
45Companies
318Contacts tracked
93Verified emails
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The 18 largest infrastructure security assessment companies based in New York, United States

Ranked by team size
Top 18 of 45 infrastructure security assessment companies 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 infrastructure security assessment companies: 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, 202651-20065 contacts →

Partial evidence

“RevelSI is a global cybersecurity, AI, software, and infrastructure services organization.”

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
4Partial evidenceNew York, NY, United StatesHQ checked Sep 28, 2026201-50019 contacts →

Partial evidence

“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: RevenueBase Database · checked Sep 28, 2026
5Strong evidenceNew York, United StatesHQ checked Sep 28, 20261,001-5,00018 contacts →

Strong 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
6Strong evidenceNew York, NY, United StatesHQ checked Sep 28, 202651-20017 contacts →

Strong evidence

“Cohere offers managed security and IT infrastructure services all under one roof.”

Source: RevenueBase Database · checked Sep 28, 2026
7Partial evidenceNew York, NY, United StatesHQ checked Sep 28, 20261-1012 contacts →

Partial evidence

“Pensar equips security teams with AI-powered tools to defend their identity and access perimeter.”

Source: RevenueBase Database · checked Sep 28, 2026
8Strong evidenceNew York, NY, United StatesHQ checked Sep 28, 202611-5012 contacts →

Strong evidence

“AlphaRidge delivers governance-embedded security infrastructure for healthcare, financial services, and other regulated organizations.”

Source: RevenueBase Database · checked Sep 28, 2026
9Indirect evidenceNew York, NY, United StatesHQ checked Sep 28, 202611-5012 contacts →

Indirect evidence

“At Silent Breach, we think like a hacker and defend like a pro.”

Source: RevenueBase Database · checked Sep 28, 2026
10Partial evidenceNew York, NY, United StatesHQ checked Sep 28, 202611-5011 contacts →

Partial evidence

“CompCiti has been providing IT auditing, compliance, security and management services for over 20 years.”

Source: RevenueBase Database · checked Sep 28, 2026
11Partial 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
12Indirect 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
13Partial evidenceNew York, United StatesHQ checked Sep 28, 202611-506 contacts →

Partial evidence

“We are a company specialized in information security.”

Source: RevenueBase Database · checked Sep 28, 2026
14Partial evidenceNew York, NY, United StatesHQ checked Sep 28, 202611-504 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
15Partial evidenceNew York, United StatesHQ checked Sep 28, 202651-2004 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
16Indirect evidenceNew York, NY, United StatesHQ checked Sep 28, 20261-104 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
17Indirect 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
18Indirect evidenceNew York, NY, United StatesHQ checked Sep 28, 20261-101 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 28, 2026

Showing 18 of 45 infrastructure security assessment companies based in New York, United States

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

As of Sep 28, 2026
29.2%Verified-email coverage
7.1Average contacts per company
11-50Median size (employees)
Sep 28, 2026Page data refreshed

Companies by employee count

1-10
20
11-50
15
51-200
5
201-500
2
1,001-5,000
3

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 45 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 assessment companies, 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 “infrastructure security assessment companies”. 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 infrastructure security assessment companies), 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 infrastructure security assessment 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 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, 93 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 infrastructure security assessment companies, 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 infrastructure security assessment companies are there based in New York, United States?

RevenueBase identified 45 infrastructure security assessment 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?

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

Which city in the United States has the most infrastructure security assessment companies?

New York leads the United States with 45 headquartered companies, followed by San Francisco (33) and Austin (31).

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 93 verified decision-maker contacts tracked across these 45 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.