Company lists · Data refreshed September 2026

Top 25 Cybersecurity incident response firms based in New York, United States

Name: Cybersecurity incident response 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 93 companies tracked

RevenueBase identified 93 cybersecurity incident response firms headquartered in New York, United States as of September 2026 and tracks 1,864 professional contacts across them, including 912 with verified work emails and 584 with mobile numbers. New York is the largest hub.

This list covers cybersecurity incident response 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

93Companies

1,864Contacts tracked

912Verified emails

584Mobile numbers

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

Ranked by team size

Top 25 of 93 cybersecurity incident response 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 incident response 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	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
2	AGIO	Partial evidence	New York, NY, United StatesHQ checked Sep 10, 2026	201-500	200 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 10, 2026
3	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
4	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
5	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
6	Nopalcyber	Partial evidence	New York, NY, United StatesHQ checked Sep 10, 2026	51-200	76 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 10, 2026
7	Eretmis INC	Indirect evidence	New York, NY, United StatesHQ checked Sep 10, 2026	n/a	66 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 10, 2026
8	Nsknox	Partial evidence	New York, NY, United StatesHQ checked Sep 10, 2026	11-50	57 contacts →
	Partial evidence “nsKnox is a cybersecurity company focused on Corporate Payment Security, founded and led by Alon Cohen, Founder & former CEO of CyberArk (NASDAQ: CYBR).” Source: RevenueBase Database · checked Sep 10, 2026
9	Port53	Indirect evidence	New York, NY, United StatesHQ checked Sep 10, 2026	51-200	55 contacts →
	Indirect evidence “Port53 Technologies is The Global Leader in Cisco-Based Managed Security Operations, helping organizations modernize and secure their digital environments through advanced…” Source: RevenueBase Database · checked Sep 10, 2026
10	Proven Data	Indirect evidence	New York, NY, United StatesHQ checked Sep 10, 2026	11-50	38 contacts →
	Indirect evidence “Founded in 2011, Proven Data has consistently evolved to meet the growing needs of our clients.” Source: RevenueBase Database · checked Sep 10, 2026
11	Ciphertechs A Cybermaxx Company	Partial evidence	New York, United StatesHQ checked Sep 10, 2026	51-200	28 contacts →
	Partial evidence “CipherTechs is now part of CyberMaxx, a tech-enabled cybersecurity service provider.” Source: RevenueBase Database · checked Sep 10, 2026
12	TAG Infosphere	Partial evidence	New York, NY, United StatesHQ checked Sep 10, 2026	11-50	22 contacts →
	Partial evidence “TAG serves the cybersecurity community, primarily with enterprise, vendors, and venture capital.” Source: RevenueBase Database · checked Sep 10, 2026
13	ACA Aponix	Partial evidence	New York, NY, United StatesHQ checked Sep 10, 2026	201-500	19 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 10, 2026
14	Unit 221b	Partial evidence	New York, NY, United StatesHQ checked Sep 10, 2026	11-50	16 contacts →
	Partial evidence “Unit 221B is a threat disruption company delivering actionable threat intelligence and cybersecurity solutions that enable enterprises, law enforcement, and government agencies to…” Source: RevenueBase Database · checked Sep 10, 2026
15	Lifars, LLC	Strong evidence	New York, NY, United StatesHQ checked Sep 10, 2026	11-50	16 contacts →
	Strong evidence “LIFARS, a SecurityScorecard Company is a global leader in Incident Response, Digital Forensics, Ransomware Mitigation, and Cyber Resiliency services.” Source: RevenueBase Database · checked Sep 10, 2026
16	Cyberconvoy	Indirect evidence	New York, United StatesHQ checked Sep 10, 2026	11-50	12 contacts →
	Indirect evidence “We’re the nemesis of evil hackers attempting to take control of your system so they can extort money.” Source: RevenueBase Database · checked Sep 10, 2026
17	Silent Breach	Indirect evidence	New York, NY, United StatesHQ checked Sep 10, 2026	11-50	12 contacts →
	Indirect evidence “At Silent Breach, we think like a hacker and defend like a pro.” Source: RevenueBase Database · checked Sep 10, 2026
18	Octillo	Strong evidence	New York, United StatesHQ checked Sep 10, 2026	11-50	11 contacts →
	Strong evidence “Octillo is one of the few law firms in the country focused exclusively on data security and privacy, incident response, and litigation.” Source: RevenueBase Database · checked Sep 10, 2026
19	Analytica42	Indirect evidence	New York, NY, United StatesHQ checked Sep 10, 2026	11-50	11 contacts →
	Indirect evidence “Analytica42 isn’t just a service provider; we’re a trusted partner in your security operations.” Source: RevenueBase Database · checked Sep 10, 2026
20	Resonance Security	Partial evidence	New York, NY, United StatesHQ checked Sep 10, 2026	11-50	9 contacts →
	Partial 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 10, 2026
21	Sayfer Cyber Security	Indirect evidence	New York, United StatesHQ checked Sep 10, 2026	11-50	8 contacts →
	Indirect evidence “Sayfer, where people and technology meet to overcome web3 and blockchain challenges.” Source: RevenueBase Database · checked Sep 10, 2026
22	Holistic Cyber Holisticyber	Indirect evidence	New York, NY, United StatesHQ checked Sep 10, 2026	51-200	8 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 10, 2026
23	MITG	Indirect evidence	New York, NY, United StatesHQ checked Sep 10, 2026	1-10	7 contacts →
	Indirect evidence “MITG exists because most businesses don't need another security vendor.” Source: RevenueBase Database · checked Sep 10, 2026
24	Sniper Watch	Partial evidence	New York, NY, United StatesHQ checked Sep 10, 2026	11-50	7 contacts →
	Partial evidence “Sniper Watch is an AI-powered cybersecurity and technology advisory + tactical deployment firm that helps organizations protect revenue, reduce risk, and scale operations in…” Source: RevenueBase Database · checked Sep 10, 2026
25	Firedome	Strong evidence	New York, NY, United StatesHQ checked Sep 10, 2026	11-50	7 contacts →
	Strong evidence “Firedome, a cybersecurity trailblazer, specializes in detection and response solutions for networks and IoT devices tailored for enterprise settings.” 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 incident response 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 incident response firms.
Partial evidence: Its own public description names part of cybersecurity incident response firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name cybersecurity incident response 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 93 cybersecurity incident response firms based in New York, United States

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

As of Sep 10, 2026

48.9%Verified-email coverage

31.3%Mobile-number coverage

20.0Average contacts per company

11-50Median size (employees)

103.2%Largest-city concentration · New York

Sep 10, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

Freshness & accuracy

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

Email last verified

Median 12.0d

8420–30

6631–60

061–90

090–180

4180+

Company record updated

Median 53.0d

00–30

1,05931–60

53161–90

14790–180

127180+

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 incident response 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 incident response 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 incident response 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 incident response 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, 912 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 incident response firms by metro in the United States

Cybersecurity incident response firms in New York96
Cybersecurity incident response firms in Washington68
Cybersecurity incident response firms in Atlanta59
Cybersecurity incident response firms in Austin58
Cybersecurity incident response firms in Dallas53
Cybersecurity incident response firms in Chicago52
Cybersecurity incident response firms in Miami52

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 incident response 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 incident response firms are there based in New York, United States?

RevenueBase identified 93 cybersecurity incident response 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?

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

Which city has the most cybersecurity incident response firms?

New York leads with 96 headquartered companies, followed by Washington (68) and Atlanta (59).

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 912 verified decision-maker contacts tracked across these 93 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.