Company lists · Data refreshed October 2026

Top 25 Cybersecurity companies based in New York, United States

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

Compiled by the RevenueBase Data Team Data refreshed Oct 1, 2026 358 companies tracked

Our directory lists 358 cybersecurity companies based in New York, United States, with 10,264 professional contacts and 3,449 email addresses. The list was last updated in October 2026. Across the United States, New York is the largest hub for this category.

Cybersecurity companies provide products and services that protect systems, networks, applications, devices, and data from unauthorized access, disruption, or misuse. This list covers companies that provide cybersecurity products, services, consulting, assessments, monitoring, incident response, or related protection for digital systems and data. Ranked by team size, largest first. Data current as of October 1, 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 Oct 1, 2026 86% judged on-target in blind review

358Companies

10,264Contacts tracked

3,449Verified emails

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

Ranked by team size

Top 25 of 358 cybersecurity companies based in New York, United States, ranked by team size, largest first. Data refreshed Oct 1, 2026. RevenueBase Smart Search rates how each company's information relates to cybersecurity 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Offsec	Strong evidence	New York, NY, United StatesHQ checked Oct 1, 2026	201-500	879 contacts →
	Strong evidence “Empowering the world to fight cyber threats with indispensable cybersecurity skills and resources.” Source: RevenueBase Database · checked Oct 1, 2026
2	Claroty	Indirect evidence	New York, NY, United StatesHQ checked Oct 1, 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 Oct 1, 2026
3	Bluevoyant	Indirect evidence	New York, NY, United StatesHQ checked Oct 1, 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 Oct 1, 2026
4	Securityscorecard	Indirect evidence	New York, NY, United StatesHQ checked Oct 1, 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 Oct 1, 2026
5	XTIUM	Indirect evidence	New York, NY, United StatesHQ checked Oct 1, 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 Oct 1, 2026
6	TORQ	Indirect evidence	New York, NY, United StatesHQ checked Oct 1, 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 Oct 1, 2026
7	Flashpoint	Indirect evidence	New York, NY, United StatesHQ checked Oct 1, 2026	201-500	265 contacts →
	Indirect evidence “Flashpoint is the leader in threat data and intelligence.” Source: RevenueBase Database · checked Oct 1, 2026
8	Vipre Security Group	Indirect evidence	New York, NY, United StatesHQ checked Oct 1, 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 Oct 1, 2026
9	Stroz Friedberg, A Levelblue Company	Indirect evidence	New York, NY, United StatesHQ checked Oct 1, 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 Oct 1, 2026
10	AGIO	Strong evidence	New York, NY, United StatesHQ checked Oct 1, 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 Oct 1, 2026
11	Certik	Indirect evidence	New York, NY, United StatesHQ checked Oct 1, 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 Oct 1, 2026
12	Deep Instinct	Strong evidence	New York, NY, United StatesHQ checked Oct 1, 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 Oct 1, 2026
13	Harbor IT	Strong evidence	New York, NY, United StatesHQ checked Oct 1, 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 Oct 1, 2026
14	Breachlock, INC	Indirect evidence	New York, NY, United StatesHQ checked Oct 1, 2026	51-200	134 contacts →
	Indirect evidence “BreachLock is a global leader in Continuous Attack Surface Discovery and Penetration Testing.” Source: RevenueBase Database · checked Oct 1, 2026
15	Cyberrisk Alliance	Strong evidence	New York, NY, United StatesHQ checked Oct 1, 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 Oct 1, 2026
16	Panorays	Indirect evidence	New York, NY, United StatesHQ checked Oct 1, 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 Oct 1, 2026
17	Brandshield	Indirect evidence	New York, NY, United StatesHQ checked Oct 1, 2026	51-200	115 contacts →
	Indirect evidence “BrandShield provides an AI Powered Digital Risk Protection solution.” Source: RevenueBase Database · checked Oct 1, 2026
18	Oligo Security	Indirect evidence	New York, NY, United StatesHQ checked Oct 1, 2026	51-200	105 contacts →
	Indirect evidence “Oligo is the industry's leading runtime security platform that solves today's toughest challenge: stopping attacks in real time in the AI era.” Source: RevenueBase Database · checked Oct 1, 2026
19	Morphisec	Indirect evidence	New York, NY, United StatesHQ checked Oct 1, 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 Oct 1, 2026
20	Trail Of Bits	Indirect evidence	New York, NY, United StatesHQ checked Oct 1, 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 Oct 1, 2026
21	Cyber City	Indirect evidence	New York, NY, United StatesHQ checked Oct 1, 2026	11-50	80 contacts →
	Indirect evidence “Cyber City inc.” Source: RevenueBase Database · checked Oct 1, 2026
22	Nopalcyber	Strong evidence	New York, NY, United StatesHQ checked Oct 1, 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 Oct 1, 2026
23	Dark Reading	Strong evidence	New York, NY, United StatesHQ checked Oct 1, 2026	n/a	75 contacts →
	Strong evidence “One of the most widely read cybersecurity news sites: Dark Reading, part of Informa TechTarget, is the most trusted online community for security professionals like you.” Source: RevenueBase Database · checked Oct 1, 2026
24	Reasonlabs	Strong evidence	New York, United StatesHQ checked Oct 1, 2026	51-200	71 contacts →
	Strong evidence “ReasonLabs is revolutionizing consumer cybersecurity with advanced, AI-powered protection against scams, fraud, and identity theft.” Source: RevenueBase Database · checked Oct 1, 2026
25	Mitiga	Indirect evidence	New York, NY, United StatesHQ checked Oct 1, 2026	51-200	70 contacts →
	Indirect evidence “Mitiga proactively detects and stops attacks before damage is done.” Source: RevenueBase Database · checked Oct 1, 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 companies. 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 companies.
Partial evidence: Its own public description names part of cybersecurity companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name cybersecurity companies. 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 358 cybersecurity companies based in New York, United States

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

As of Oct 1, 2026

33.6%Verified-email coverage

28.7Average contacts per company

11-50Median size (employees)

Oct 1, 2026Page data refreshed

Companies by employee count

1-10

145

11-50

126

51-200

201-500

501-1,000

1,001-5,000

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 358 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 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 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 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 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, 3,449 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 October 1, 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 companies by metro in the United States

Frequently asked

How many cybersecurity companies are in the directory?

The directory lists 358 cybersecurity companies based in New York, United States.

Which city in the United States has the most cybersecurity companies?

New York leads the United States with 358 headquartered companies, followed by San Francisco (190) and Austin (187).

How many contacts are available for cybersecurity companies?

The directory includes 10,264 professional contacts and 3,449 email addresses for the listed cybersecurity companies.

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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.