Company lists · Data refreshed September 2026

Top 25 Cybersecurity firms based in New York, United States

Name: Cybersecurity firms based in New York, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 10, 2026 332 companies tracked

RevenueBase identified 332 cybersecurity firms headquartered in New York, United States as of September 2026 and tracks 10,573 professional contacts across them, including 3,875 with verified work emails and 2,863 with mobile numbers. New York is the largest hub.

This list covers cybersecurity firms 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 10, 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 10, 2026 86% judged on-target in blind review

332Companies

10,573Contacts tracked

3,875Verified emails

2,863Mobile numbers

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The 25 largest cybersecurity firms based in New York, United States

Ranked by team size

Top 25 of 332 cybersecurity firms based in New York, United States, ranked by team size, largest first. Data refreshed Sep 10, 2026. RevenueBase Smart Search rates how each company's information relates to cybersecurity firms: 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Offsec	Strong evidence	New York, NY, United StatesHQ checked Sep 10, 2026	201-500	879 contacts →
	Strong evidence “Empowering the world to fight cyber threats with indispensable cybersecurity skills and resources.” Source: RevenueBase Database · checked Sep 10, 2026
2	Claroty	Indirect evidence	New York, NY, United StatesHQ checked Sep 10, 2026	501-1,000	725 contacts →
	Indirect evidence “Claroty has redefined cyber-physical systems (CPS) protection with an unrivaled industry-centric platform built to secure mission-critical infrastructure.” Source: RevenueBase Database · checked Sep 10, 2026
3	Bluevoyant	Indirect evidence	New York, NY, United StatesHQ checked Sep 10, 2026	501-1,000	683 contacts →
	Indirect evidence “BlueVoyant’s Cyber Defense Platform (CDP) integrates MDR, TPRM, and DRP into a seamless, scalable solution.” Source: RevenueBase Database · checked Sep 10, 2026
4	Securityscorecard	Indirect evidence	New York, NY, United StatesHQ checked Sep 10, 2026	501-1,000	535 contacts →
	Indirect evidence “Funded by world-class investors, including Evolution Equity Partners, Silver Lake Partners, Sequoia Capital, GV, Riverwood Capital, and others, SecurityScorecard is the global…” Source: RevenueBase Database · checked Sep 10, 2026
5	XTIUM	Indirect evidence	New York, NY, United StatesHQ checked Sep 10, 2026	501-1,000	478 contacts →
	Indirect evidence “XTIUM, created through the business combination of ATSG and Evolve IP, delivers a modern security-first approach to the managed IT services experience.” Source: RevenueBase Database · checked Sep 10, 2026
6	Biocatch	Indirect evidence	New York, NY, United StatesHQ checked Sep 10, 2026	201-500	432 contacts →
	Indirect evidence “BioCatch prevents financial crime by recognizing patterns in human behavior.” Source: RevenueBase Database · checked Sep 10, 2026
7	TORQ	Indirect evidence	New York, NY, United StatesHQ checked Sep 10, 2026	201-500	359 contacts →
	Indirect evidence “Torq is the AI SOC platform that combines agentic insights and automation so that enterprises can triage, investigate, and respond to actual risks, faster.” Source: RevenueBase Database · checked Sep 10, 2026
8	Flashpoint	Indirect evidence	New York, NY, United StatesHQ checked Sep 10, 2026	201-500	265 contacts →
	Indirect evidence “Flashpoint is the leader in threat data and intelligence.” Source: RevenueBase Database · checked Sep 10, 2026
9	Thoropass	Strong evidence	New York, NY, United StatesHQ checked Sep 10, 2026	201-500	243 contacts →
	Strong evidence “Thoropass is the only end-to-end cybersecurity auditor.” Source: RevenueBase Database · checked Sep 10, 2026
10	Vipre Security Group	Indirect evidence	New York, NY, United StatesHQ checked Sep 10, 2026	201-500	207 contacts →
	Indirect evidence “At VIPRE Security, our mission is to help humanity prosper by creating a high level of trust that enables digital safety for all.” Source: RevenueBase Database · checked Sep 10, 2026
11	DGA Security	Indirect evidence	New York, NY, United StatesHQ checked Sep 10, 2026	201-500	206 contacts →
	Indirect evidence “Since 1969, thousands of businesses across the country have entrusted their protection to DGA Security.” Source: RevenueBase Database · checked Sep 10, 2026
12	Stroz Friedberg, A Levelblue Company	Indirect evidence	New York, NY, United StatesHQ checked Sep 10, 2026	501-1,000	206 contacts →
	Indirect evidence “Stroz Friedberg is now LevelBlue, the world's largest pure-play Managed Security Services Provider (MSSP).” Source: RevenueBase Database · checked Sep 10, 2026
13	AGIO	Strong evidence	New York, NY, United StatesHQ checked Sep 10, 2026	201-500	200 contacts →
	Strong 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 10, 2026
14	Certik	Indirect evidence	New York, NY, United StatesHQ checked Sep 10, 2026	201-500	190 contacts →
	Indirect evidence “CertiK is the largest Web3 security services provider, founded in December 2017 in New York by two professors from Yale and Columbia University.” Source: RevenueBase Database · checked Sep 10, 2026
15	Deep Instinct	Strong evidence	New York, NY, United StatesHQ checked Sep 10, 2026	201-500	174 contacts →
	Strong evidence “Deep Instinct has developed the world’s first and only purpose-built deep learning cybersecurity framework powered by DSX Brain, a deep neural network that mimics the logic of the…” Source: RevenueBase Database · checked Sep 10, 2026
16	Harbor IT	Strong evidence	New York, NY, United StatesHQ checked Sep 10, 2026	201-500	163 contacts →
	Strong evidence “Harbor IT helps organizations secure, operate, and scale through integrated IT, cybersecurity, AI, and cloud services.” Source: RevenueBase Database · checked Sep 10, 2026
17	Breachlock, INC	Indirect evidence	New York, NY, United StatesHQ checked Sep 10, 2026	51-200	134 contacts →
	Indirect evidence “BreachLock is a global leader in Continuous Attack Surface Discovery and Penetration Testing.” Source: RevenueBase Database · checked Sep 10, 2026
18	Cyberrisk Alliance	Strong evidence	New York, NY, United StatesHQ checked Sep 10, 2026	51-200	119 contacts →
	Strong evidence “CyberRisk Alliance (CRA) was formed to help cybersecurity professionals face the challenges and obstacles that threaten the success and prosperity of their organizations.” Source: RevenueBase Database · checked Sep 10, 2026
19	Panorays	Indirect evidence	New York, NY, United StatesHQ checked Sep 10, 2026	51-200	117 contacts →
	Indirect evidence “Panorays is a leading provider of third-party cyber risk management solutions, helping businesses optimize their defenses for each unique third-party relationship.” Source: RevenueBase Database · checked Sep 10, 2026
20	Brandshield	Indirect evidence	New York, NY, United StatesHQ checked Sep 10, 2026	51-200	115 contacts →
	Indirect evidence “BrandShield provides an AI Powered Digital Risk Protection solution.” Source: RevenueBase Database · checked Sep 10, 2026
21	Morphisec	Indirect evidence	New York, NY, United StatesHQ checked Sep 10, 2026	51-200	104 contacts →
	Indirect evidence “We empower organizations with resilient, self-healing capabilities that prevent and neutralize even the most advanced cyber threats.” Source: RevenueBase Database · checked Sep 10, 2026
22	Trail Of Bits	Indirect evidence	New York, NY, United StatesHQ checked Sep 10, 2026	51-200	94 contacts →
	Indirect evidence “Since 2012, Trail of Bits has been the premier place for security experts to boldly advance security and address technology’s newest and most challenging risks.” Source: RevenueBase Database · checked Sep 10, 2026
23	Cyber City	Indirect evidence	New York, NY, United StatesHQ checked Sep 10, 2026	11-50	80 contacts →
	Indirect evidence “Cyber City inc.” Source: RevenueBase Database · checked Sep 10, 2026
24	Torchstone Global	Indirect evidence	New York, NY, United StatesHQ checked Sep 10, 2026	51-200	77 contacts →
	Indirect evidence “TorchStone is a discreet risk mitigation and security advisory firm serving the unique needs of the world’s leading organizations and individuals.” Source: RevenueBase Database · checked Sep 10, 2026
25	Nopalcyber	Strong evidence	New York, NY, United StatesHQ checked Sep 10, 2026	51-200	76 contacts →
	Strong evidence “NopalCyber makes cybersecurity manageable, affordable, reliable, and powerful for companies that need to be resilient and compliant.” Source: RevenueBase Database · checked Sep 10, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: cybersecurity firms. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names cybersecurity firms.
Partial evidence: Its own public description names part of cybersecurity firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name cybersecurity firms. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 332 cybersecurity firms based in New York, United States

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Cybersecurity firms based in New York, United States at a glance

As of Sep 10, 2026

36.6%Verified-email coverage

27.1%Mobile-number coverage

31.8Average contacts per company

11-50Median size (employees)

98.2%Largest-city concentration · New York

Sep 10, 2026Page data refreshed

Companies by employee count

1-10

137

11-50

110

51-200

201-500

501-1,000

1,001-5,000

10001+

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 12.0d

3,5460–30

30131–60

361–90

490–180

21180+

Company record updated

Median 54.0d

00–30

5,97131–60

3,19261–90

83690–180

574180+

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 firms, 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 firms”. 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 firms), 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 firms, 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, 3,875 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 10, 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 firms 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 firms, 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 firms are there based in New York, United States?

RevenueBase identified 332 cybersecurity firms 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 firms?

New York leads with 326 headquartered companies, followed by Washington (184) and Austin (181).

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 3,875 verified decision-maker contacts tracked across these 332 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 10, 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.