Company lists · Data refreshed September 2026

Top 25 Incident response consultancies worldwide

Name: Incident response consultancies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 6,669 companies tracked

RevenueBase identified 6,669 incident response consultancies worldwide as of September 2026 and tracks 71,172 professional contacts across them, including 25,114 with verified work emails. The United States is the largest market and London the largest hub.

This list covers incident response consultancies worldwide, 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 28, 2026. Country and city lists for incident response consultancies follow the table.

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 28, 2026 86% judged on-target in blind review

6,669Companies

71,172Contacts tracked

25,114Verified emails

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The 25 largest incident response consultancies worldwide

Ranked by team size

Top 25 of 6,669 incident response consultancies worldwide, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to incident response consultancies: 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	Arctic Wolf	Indirect evidence	Eden Prairie, MN, United StatesHQ checked Sep 28, 2026	1,001-5,000	3,145 contacts →
	Indirect evidence “Every year new technologies, vendors, and solutions emerge-yet despite this constant innovation, high-profile breaches are all over the headlines.” Source: RevenueBase Database · checked Sep 28, 2026
2	OPTIV	Indirect evidence	Leawood, KS, United StatesHQ checked Sep 28, 2026	1,001-5,000	2,222 contacts →
	Indirect evidence “Optiv is the cyber advisory and solutions leader, delivering strategic and technical expertise to nearly companies across every major industry.” Source: RevenueBase Database · checked Sep 28, 2026
3	Guidepoint Security	Indirect evidence	Reston, VA, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,232 contacts →
	Indirect evidence “GuidePoint Security provides trusted cybersecurity expertise, solutions, and services that help organizations make informed decisions and minimize risk.” Source: RevenueBase Database · checked Sep 28, 2026
4	IEM	Indirect evidence	Morrisville, NC, United StatesHQ checked Sep 28, 2026	501-1,000	1,175 contacts →
	Indirect evidence “IEM is a professional services firm dedicated to building a safe, secure, and resilient world.” Source: RevenueBase Database · checked Sep 28, 2026
5	Brosnan Risk Consultants	Indirect evidence	Pearl River, NY, United StatesHQ checked Sep 28, 2026	5,001-10,000	1,050 contacts →
	Indirect evidence “Brosnan Risk Consultants, Ltd.(BRC) is a security risk management firm focusing on physical security, emergency security, disaster preparedness and recovery and management…” Source: RevenueBase Database · checked Sep 28, 2026
6	Cyderes	Indirect evidence	Kansas City, MO, United StatesHQ checked Sep 28, 2026	1,001-5,000	844 contacts →
	Indirect evidence “Today’s threatscape is relentless.” Source: RevenueBase Database · checked Sep 28, 2026
7	EFI Global	Indirect evidence	Memphis, TN, United StatesHQ checked Sep 28, 2026	501-1,000	748 contacts →
	Indirect evidence “EFI Global is a multidisciplinary consulting firm that helps clients investigate, assess and resolve complex property, infrastructure and financial challenges.” Source: RevenueBase Database · checked Sep 28, 2026
8	SISA	Indirect evidence	Bengaluru, IndiaHQ checked Sep 28, 2026	201-500	743 contacts →
	Indirect evidence “SISA is a global forensics-driven cybersecurity solutions company, trusted by leading organizations for securing their businesses with robust preventive, detective, and corrective…” Source: RevenueBase Database · checked Sep 28, 2026
9	I-Tracing	Indirect evidence	Courbevoie, FranceHQ checked Sep 28, 2026	1,001-5,000	639 contacts →
	Indirect evidence “I-TRACING, pure player and cybersecurity service provider leader in France, supports over 600 clients around the world in managing their cyber risks, from anticipating threats to…” Source: RevenueBase Database · checked Sep 28, 2026
10	Cybereason, A Levelblue Company	Partial evidence	San Diego, CA, United StatesHQ checked Sep 28, 2026	1,001-5,000	574 contacts →
	Partial evidence “Cybereason, a LevelBlue company, is a global cybersecurity leader delivering advanced endpoint detection and response (EDR) and industry recognized consulting services to support…” Source: RevenueBase Database · checked Sep 28, 2026
11	Group-Ib	Indirect evidence	SingaporeHQ checked Sep 28, 2026	501-1,000	528 contacts →
	Indirect evidence “Founded in 2003 and headquartered in Singapore, Group-IB is a leading creator of cybersecurity technologies to investigate, prevent, and fight digital crime.” Source: RevenueBase Database · checked Sep 28, 2026
12	own.security	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	51-200	506 contacts →
	Indirect evidence “Founded in 2008, OWN is a Pure Player in cybersecurity, with offices in Paris, Rennes and Toulouse, but with a presence throughout France with its fully remote employees.” Source: RevenueBase Database · checked Sep 28, 2026
13	Intrado	Partial evidence	Longmont, CO, United StatesHQ checked Sep 28, 2026	1,001-5,000	483 contacts →
	Partial evidence “Intrado is dedicated to saving lives and protecting communities, with a mission to provide comprehensive support in preparing for, responding to, and recovering from critical…” Source: RevenueBase Database · checked Sep 28, 2026
14	Hagerty Consulting	Partial evidence	Evanston, IL, United StatesHQ checked Sep 28, 2026	201-500	472 contacts →
	Partial evidence “For over twenty years, Hagerty Consulting has supported clients in preparing for, responding to, and recovering from some of the nation’s largest and most complex disasters.” Source: RevenueBase Database · checked Sep 28, 2026
15	Afimac Global	Indirect evidence	Strongsville, OH, United StatesHQ checked Sep 28, 2026	51-200	467 contacts →
	Indirect evidence “AFIMAC Global: Trusted Crisis Management & Business Continuity Partner.” Source: RevenueBase Database · checked Sep 28, 2026
16	ARETE	Partial evidence	Boca Raton, FL, United StatesHQ checked Sep 28, 2026	201-500	462 contacts →
	Partial evidence “Arete helps organizations stay ahead of cyber threats with standardized, intelligence-led detection, response, resolution, and resilience capabilities.” Source: RevenueBase Database · checked Sep 28, 2026
17	Kenyon International Emergency Services	Indirect evidence	Spring, TX, United StatesHQ checked Sep 28, 2026	n/a	446 contacts →
	Indirect evidence “Kenyon International Emergency Services (Kenyon), a TrustFlight company, is the world’s leading full-service disaster management company.” Source: RevenueBase Database · checked Sep 28, 2026
18	Palo Alto Networks Unit 42	Strong evidence	Santa Clara, CA, United StatesHQ checked Sep 28, 2026	5,001-10,000	441 contacts →
	Strong evidence “Palo Alto Networks Unit 42 brings together world-renowned threat researchers with an elite team of incident responders and security consultants to create an intelligence-driven…” Source: RevenueBase Database · checked Sep 28, 2026
19	Tidal Basin Group	Indirect evidence	Utica, NY, United StatesHQ checked Sep 28, 2026	501-1,000	393 contacts →
	Indirect evidence “The impact of disasters-natural or otherwise-can leave even the most robust entities vulnerable, causing uncertainty over their future.” Source: RevenueBase Database · checked Sep 28, 2026
20	Esec Forte Technologies	Indirect evidence	Gurugram, IndiaHQ checked Sep 28, 2026	201-500	363 contacts →
	Indirect evidence “eSec Forte® Technologies is a CMMi Level 3 certified Global Consulting and IT Security Services company with offerings across Cloud Security, Cyber Forensics, Malware Detection…” Source: RevenueBase Database · checked Sep 28, 2026
21	S-Rm	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	201-500	351 contacts →
	Indirect evidence “S-RM is a global intelligence and cyber security consultancy.” Source: RevenueBase Database · checked Sep 28, 2026
22	SK Shieldus	Indirect evidence	경기도, South KoreaHQ checked Sep 28, 2026	5,001-10,000	348 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026
23	CTEH	Partial evidence	North Little Rock, AR, United StatesHQ checked Sep 28, 2026	201-500	336 contacts →
	Partial evidence “CTEH, LLC's purpose is preparing for and responding to a company's or community’s worst day.” Source: RevenueBase Database · checked Sep 28, 2026
24	Truesec	Indirect evidence	SwedenHQ checked Sep 28, 2026	201-500	332 contacts →
	Indirect evidence “Prevent Breach & Minimize Impact” Source: RevenueBase Database · checked Sep 28, 2026
25	Nviso Security	Indirect evidence	Brussels, BelgiumHQ checked Sep 28, 2026	201-500	315 contacts →
	Indirect evidence “NVISO is a cyber security services firm composed of outstanding security professionals - each has a specific field of expertise, ranging from security research and risk management…” Source: RevenueBase Database · checked Sep 28, 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: incident response consultancies. 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 incident response consultancies.
Partial evidence: Its own public description names part of incident response consultancies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name incident response consultancies. 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 6,669 incident response consultancies worldwide

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Incident response consultancies worldwide at a glance

As of Sep 28, 2026

35.3%Verified-email coverage

10.7Average contacts per company

1-10Median size (employees)

2.5%Largest-city concentration · London

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

4,265

11-50

1,788

51-200

457

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency is reported on each country list linked below.

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 incident response consultancies, 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.
Coverage: Every country. Country and city lists for incident response consultancies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “incident response consultancies”. 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 incident response consultancies), 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 incident response consultancies, and records with no verified work email.
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, 25,114 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 28, 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.

Incident response consultancies by location

41 lists · largest first

Every Incident response consultancies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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 incident response consultancies, 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 incident response consultancies are there worldwide?

RevenueBase identified 6,669 incident response consultancies worldwide 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?

Arctic Wolf, headquartered in Eden Prairie, tops this list with the largest team on record.

Which country has the most incident response consultancies?

The United States leads with 1,584 companies, followed by the United Kingdom (518) and France (338). Every incident response consultancies list by country and city is linked on this page.

Which city has the most incident response consultancies?

London leads with 167 headquartered companies, followed by Paris (99) and Sao Paulo (54).

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 25,114 verified decision-maker contacts tracked across these 6,669 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 28, 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.