Company lists · Data refreshed September 2026
Top 25 Network security companies based in New York, United States
RevenueBase identified 72 network security companies headquartered in New York, United States as of September 2026 and tracks 1,893 professional contacts across them, including 958 with verified work emails. New York is the largest hub.
This list covers network 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 5, 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.
The 25 largest network security companies based in New York, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 683 | ||||
“BlueVoyant’s Cyber Defense Platform (CDP) integrates MDR, TPRM, and DRP into a seamless, scalable solution.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 2 | 200 | ||||
“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: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 3 | 104 | ||||
“We empower organizations with resilient, self-healing capabilities that prevent and neutralize even the most advanced cyber threats.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 4 | 76 | ||||
“NopalCyber makes cybersecurity manageable, affordable, reliable, and powerful for companies that need to be resilient and compliant.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 5 | 66 | ||||
Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 6 | 65 | ||||
“RevelSI is a global cybersecurity, AI, software, and infrastructure services organization.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 7 | 55 | ||||
“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 5, 2026Thanks. The Data Team will review it. | |||||
| 8 | 28 | ||||
“CipherTechs is now part of CyberMaxx, a tech-enabled cybersecurity service provider.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 9 | 20 | ||||
“Future-Ready Security for Today’s Decision-Makers.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 10 | 17 | ||||
“Cohere offers managed security and IT infrastructure services all under one roof.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 11 | 15 | ||||
“Total Defense provides powerful protection from evolving online threats.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 12 | 12 | ||||
“We’re the nemesis of evil hackers attempting to take control of your system so they can extort money.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 13 | Silent BreachIndirect evidence | 12 | |||
“At Silent Breach, we think like a hacker and defend like a pro.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 14 | 11 | ||||
“Analytica42 isn’t just a service provider; we’re a trusted partner in your security operations.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 15 | 9 | ||||
“R-MOR is a cybersecurity firm founded in 2007.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 16 | Resonance SecurityPartial evidence | 9 | |||
“Resonance Security offers full spectrum cybersecurity aggregation software for institutions and individuals that makes protecting against any cybersecurity threat effortless no…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 17 | 8 | ||||
“Sayfer, where people and technology meet to overcome web3 and blockchain challenges.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 18 | 8 | ||||
“HolistiCyber’s mission is to assist corporations in defending themselves from the new phase of evolution in Cyber threats - not only in volume, but in the level of sophistication.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 19 | MITGPartial evidence | 7 | |||
“MITG exists because most businesses don't need another security vendor.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 20 | 7 | ||||
“Firedome, a cybersecurity trailblazer, specializes in detection and response solutions for networks and IoT devices tailored for enterprise settings.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 21 | 5 | ||||
“Bay Dynamics is now part of Broadcom.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 22 | 4 | ||||
“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 5, 2026Thanks. The Data Team will review it. | |||||
| 23 | 4 | ||||
“Velstadt is a cybersecurity provider focused on delivering both offensive and defensive security services.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 24 | 4 | ||||
“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 5, 2026Thanks. The Data Team will review it. | |||||
| 25 | 3 | ||||
“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 5, 2026Thanks. The Data Team will review it. | |||||
Showing 25 of 72 network security companies based in New York, United States
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Network security companies based in New York, United States at a glance
As of Sep 5, 2026Companies by employee count
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 72 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 network 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 “network 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 network 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, 958 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 5, 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.
Network security companies by metro in the United States
- Network security companies in New York72
- Network security companies in Miami45
- Network security companies in Houston44
- Network security companies in Austin41
- Network security companies in Dallas40
- Network security companies in Chicago36
- Network security companies in Atlanta33
- Network security companies in San Francisco28
- Network security companies in Washington27
Frequently asked
How many network security companies are there based in New York, United States?
RevenueBase identified 72 network 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?
Bluevoyant, headquartered in New York, tops this list with the largest team on record.
Which city has the most network security companies?
New York leads with 72 headquartered companies, followed by Miami (45) and Houston (44).
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 958 verified decision-maker contacts tracked across these 72 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 5, 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.
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