Company lists · Data refreshed September 2026

Top 21 Cybersecurity professional development software companies based in New York, United States

RevenueBase identified 98 cybersecurity professional development software companies headquartered in New York, United States as of September 2026 and tracks 2,336 professional contacts across them, including 624 with verified work emails. New York is the largest hub.

This list covers cybersecurity professional development software 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 14, 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 14, 2026 86% judged on-target in blind review
98Companies
2,336Contacts tracked
624Verified emails
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The 21 largest cybersecurity professional development software companies based in New York, United States

Ranked by team size
Top 21 of 98 cybersecurity professional development software companies based in New York, United States, ranked by team size, largest first. Data refreshed Sep 14, 2026. RevenueBase Smart Search rates how each company's information relates to cybersecurity professional development software 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 14, 2026201-500879 contacts →

Partial evidence

“Empowering the world to fight cyber threats with indispensable cybersecurity skills and resources.”

Source: RevenueBase Database · checked Sep 14, 2026
2Partial evidenceNew York, NY, United StatesHQ checked Sep 14, 2026201-500200 contacts →

Partial evidence

“Agio is a hybrid cybersecurity and managed IT organization that combines predictive intelligence with human brilliance to empower clients with next-generation cyber protection and…”

Source: RevenueBase Database · checked Sep 14, 2026
3Partial evidenceNew York, NY, United StatesHQ checked Sep 14, 2026201-500163 contacts →

Partial evidence

“Harbor IT helps organizations secure, operate, and scale through integrated IT, cybersecurity, AI, and cloud services.”

Source: RevenueBase Database · checked Sep 14, 2026
4Partial evidenceNew York, NY, United StatesHQ checked Sep 14, 202651-20076 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 14, 2026
5Indirect evidenceNew York, NY, United StatesHQ checked Sep 14, 2026n/a66 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 14, 2026
6Partial evidenceNew York, NY, United StatesHQ checked Sep 14, 202651-20058 contacts →

Partial evidence

“Altourage is a New York City-based managed IT and cybersecurity provider built for organizations that operate in high-stakes, fast-moving environments.”

Source: RevenueBase Database · checked Sep 14, 2026
7Indirect evidenceNew York, NY, United StatesHQ checked Sep 14, 202611-5038 contacts →

Indirect 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 14, 2026
8Partial evidenceNew York, United StatesHQ checked Sep 14, 202651-20028 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 14, 2026
9Indirect evidenceNew York, NY, United StatesHQ checked Sep 14, 202611-5026 contacts →

Indirect evidence

“DeepTech, your IT solutions partner, is redefining how IT is managed by exceeding the level of service that companies have come to expect from traditional Managed Service…”

Source: RevenueBase Database · checked Sep 14, 2026
10Partial evidenceNew York, NY, United StatesHQ checked Sep 14, 202611-5019 contacts →

Partial evidence

“Rocheston provides training and certification in the field of Cybersecurity.”

Source: RevenueBase Database · checked Sep 14, 2026
11Indirect evidenceNew York, NY, United StatesHQ checked Sep 14, 20261-109 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 14, 2026
12Strong evidenceNew York, NY, United StatesHQ checked Sep 14, 202611-509 contacts →

Strong evidence

“Resonance Security offers full spectrum cybersecurity aggregation software for institutions and individuals that makes protecting against any cybersecurity threat effortless no…”

Source: RevenueBase Database · checked Sep 14, 2026
13Indirect evidenceNew York, NY, United StatesHQ checked Sep 14, 202611-508 contacts →

Indirect evidence

“At SeaGlass Technology we specialize using our proprietary methodology and processes developed from our VCISO team and experienced tech teams approach to managing Hedge Funds IT &…”

Source: RevenueBase Database · checked Sep 14, 2026
14Indirect evidenceNew York, United StatesHQ checked Sep 14, 202611-508 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 14, 2026
15Partial evidenceNew York, NY, United StatesHQ checked Sep 14, 202611-506 contacts →

Partial evidence

“Decoded Solutions is a dynamic tech company with over 10 years of experience providing custom software solutions to businesses in the United States.”

Source: RevenueBase Database · checked Sep 14, 2026
16Partial evidenceNew York, NY, United StatesHQ checked Sep 14, 20261-105 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 14, 2026
17Indirect evidenceNew York, NY, United StatesHQ checked Sep 14, 202611-504 contacts →

Indirect evidence

“Citanex was founded by a former US Secret Service Electronic Crimes Agent with advisory credentials from Harvard, MIT, and the Department of Justice.”

Source: RevenueBase Database · checked Sep 14, 2026
18Partial evidenceNew York, United StatesHQ checked Sep 14, 202611-504 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 14, 2026
19Partial evidenceNew York, NY, United StatesHQ checked Sep 14, 20261-104 contacts →

Partial 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 14, 2026
20Partial evidenceNew York, NY, United StatesHQ checked Sep 14, 20261-103 contacts →

Partial 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 14, 2026
21Partial evidenceNew York, NY, United StatesHQ checked Sep 14, 20261-103 contacts →

Partial 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 14, 2026

Showing 21 of 98 cybersecurity professional development software companies based in New York, United States

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Cybersecurity professional development software companies based in New York, United States at a glance

As of Sep 14, 2026
26.7%Verified-email coverage
23.8Average contacts per company
1-10Median size (employees)
100.0%Largest-city concentration · New York
Sep 14, 2026Page data refreshed

Companies by employee count

1-10
51
11-50
26
51-200
12
201-500
8
1,001-5,000
1

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 98 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 cybersecurity professional development software 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 “cybersecurity professional development software 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 cybersecurity professional development software 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 cybersecurity professional development software 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, 624 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 14, 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.

Cybersecurity professional development software companies by metro in the United States

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 cybersecurity professional development software 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 cybersecurity professional development software companies are there based in New York, United States?

RevenueBase identified 98 cybersecurity professional development software 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?

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

Which city has the most cybersecurity professional development software companies?

New York leads with 98 headquartered companies, followed by Washington (72) and Dallas (60).

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 624 verified decision-maker contacts tracked across these 98 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 14, 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.