Company lists · Data refreshed September 2026

Top 25 Cybersecurity consultancy companies worldwide

Name: Cybersecurity consultancy companies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 1, 2026 28,037 companies tracked

RevenueBase identified 28,037 cybersecurity consultancy companies worldwide as of September 2026 and tracks 400,741 professional contacts across them, including 136,225 with verified work emails and 57,189 with mobile numbers. The United States is the largest market and London the largest hub.

This list covers cybersecurity consultancy companies 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 1, 2026. Country and city lists for cybersecurity consultancy companies 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 RevenueBase Smart Search rating on every row Refreshed Sep 1, 2026 86% judged on-target in blind review

28,037Companies

400,741Contacts tracked

136,225Verified emails

57,189Mobile numbers

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The 25 largest cybersecurity consultancy companies worldwide

Ranked by team size

Top 25 of 28,037 cybersecurity consultancy companies worldwide, ranked by team size, largest first. Data refreshed Sep 1, 2026. RevenueBase Smart Search rates how each company's information relates to cybersecurity consultancy 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	Palo Alto Networks	Partial evidence	He, NL	10001+	18,430 contacts →
	Partial evidence “Palo Alto Networks, the global cybersecurity leader, is shaping the cloud-centric future with technology that is transforming the way people and organizations operate.” Source: RevenueBase Database · checked Sep 1, 2026
2	Fortinet	Indirect evidence	Ottawa, ON, CA	10001+	14,326 contacts →
	Indirect evidence “Fortinet makes possible a digital world that we can always trust through its mission to protect people, devices, and data everywhere.” Source: RevenueBase Database · checked Sep 1, 2026
3	Symantec	Partial evidence	San Jose, CA, US	10001+	11,179 contacts →
	Partial evidence “Your backstage pass to the most epic cybersecurity solutions on the market for Endpoint, Network, Data and Cloud security.” Source: RevenueBase Database · checked Sep 1, 2026
4	Sophos	Partial evidence	Abingdon, GB	5,001-10,000	4,963 contacts →
	Partial evidence “Sophos is a cybersecurity leader defending organizations globally with an AI-driven platform and expert-led services.” Source: RevenueBase Database · checked Sep 1, 2026
5	Orange Cyberdefense	Partial evidence	BE	1,001-5,000	3,706 contacts →
	Partial evidence “Orange Cyberdefense is the expert cybersecurity business unit of the Orange Group.” Source: RevenueBase Database · checked Sep 1, 2026
6	Trellix	Partial evidence	Plano, TX, US	1,001-5,000	3,490 contacts →
	Partial evidence “Trellix is a global cybersecurity company delivering intelligence-led cyber resilience for security-conscious organizations at any stage of their journey.” Source: RevenueBase Database · checked Sep 1, 2026
7	OPTIV	Indirect evidence	Chantilly, VA, US	1,001-5,000	2,206 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 1, 2026
8	Bitdefender	Partial evidence	Fort Lauderdale, FL, US	1,001-5,000	2,141 contacts →
	Partial evidence “Bitdefender is a cybersecurity leader delivering best-in-class threat prevention, detection, and response solutions worldwide.” Source: RevenueBase Database · checked Sep 1, 2026
9	Inspira Enterprise	Partial evidence	Mumbai, IndiaHQ checked Sep 1, 2026	1,001-5,000	1,773 contacts →
	Partial evidence “Inspira Enterprise is a global Cybersecurity & Data Analytics & AI services provider with a presence in North America, ASEAN, Middle East, India, and Africa regions.” Source: RevenueBase Database · checked Sep 1, 2026
10	Fortra	Partial evidence	Eden Prairie, MN, US	1,001-5,000	1,640 contacts →
	Partial evidence “Fortra delivers AI-amplified cybersecurity solutions that help organizations use and protect data with confidence.” Source: RevenueBase Database · checked Sep 1, 2026
11	Quick Heal	Indirect evidence	Pune, IndiaHQ checked Sep 1, 2026	1,001-5,000	1,510 contacts →
	Indirect evidence “Quick Heal Technologies Limited is one of the leading providers of IT Security and Data Protection Solutions with a strong footprint in India and an evolving global presence.” Source: RevenueBase Database · checked Sep 1, 2026
12	Nava Tech For Business	Indirect evidence	Barueri, BR	1,001-5,000	1,468 contacts →
	Indirect evidence “Atuamos no core de empresas líderes em seus segmentos, onde tecnologia, estratégia e operação se encontram.” Source: RevenueBase Database · checked Sep 1, 2026
13	Site سايت	Indirect evidence	Al Nakheel, Saudi ArabiaHQ checked Sep 1, 2026	501-1,000	1,378 contacts →
	Indirect evidence “We are established for enriching local content in designing, developing, and operating secure digital computing environments through Saudi talents, by fulfilling our role as a…” Source: RevenueBase Database · checked Sep 1, 2026
14	Thales Cybersecurity Products	Partial evidence	Austin, TX, US	1,001-5,000	1,252 contacts →
	Partial evidence “Thales is a global leader in cybersecurity, helping the most trusted organizations in the world protect their most critical applications, data, and identities anywhere at scale.” Source: RevenueBase Database · checked Sep 1, 2026
15	Guidepoint Security	Partial evidence	Tampa, FL, US	1,001-5,000	1,234 contacts →
	Partial evidence “GuidePoint Security provides trusted cybersecurity expertise, solutions, and services that help organizations make informed decisions and minimize risk.” Source: RevenueBase Database · checked Sep 1, 2026
16	Imperva	Indirect evidence	Austin, TX, US	10001+	1,211 contacts →
	Indirect evidence “On Dec.” Source: RevenueBase Database · checked Sep 1, 2026
17	Tahaluf AL Emarat Technical Solutions تحالف الإمارات للحلول التقنية	Partial evidence	Abu Dhabi, United Arab EmiratesHQ checked Sep 1, 2026	501-1,000	1,159 contacts →
	Partial evidence “Founded in Abu Dhabi in 2015, Tahaluf has quickly established itself as one of the nation's top cybersecurity and IT companies and the leading government solutions provider for…” Source: RevenueBase Database · checked Sep 1, 2026
18	Irdeto	Partial evidence	Wroclaw, PL	1,001-5,000	1,062 contacts →
	Partial evidence “Irdeto is the world leader in digital platform cybersecurity, empowering businesses to innovate for a secure, connected future.” Source: RevenueBase Database · checked Sep 1, 2026
19	Watchguard Technologies	Indirect evidence	Seattle, WA, US	1,001-5,000	1,054 contacts →
	Indirect evidence “WatchGuard® Technologies, Inc.” Source: RevenueBase Database · checked Sep 1, 2026
20	Coalfire	Partial evidence	Chicago, IL, US	1,001-5,000	960 contacts →
	Partial evidence “Coalfire is the premier Cybersecurity and Compliance Services leader for the tech, healthcare, and finance industries.(This page is maintained by Marketing.” Source: RevenueBase Database · checked Sep 1, 2026
21	Zerofox	Indirect evidence	GB	501-1,000	894 contacts →
	Indirect evidence “ZeroFox is the solution to discover, validate, and disrupt external cyber threats before they harm revenue or reputation.” Source: RevenueBase Database · checked Sep 1, 2026
22	Ensign Infosecurity	Partial evidence	SingaporeHQ checked Sep 1, 2026	501-1,000	888 contacts →
	Partial evidence “Ensign InfoSecurity is the largest pure-play end-to-end cybersecurity service provider in Asia.” Source: RevenueBase Database · checked Sep 1, 2026
23	ALLOT	Partial evidence	Hod-Hasharon, IL	501-1,000	852 contacts →
	Partial evidence “Allot Ltd.(NASDAQ: ALLT, TASE: ALLT) is a provider of leading innovative converged cybersecurity solutions and network intelligence for service providers and enterprises…” Source: RevenueBase Database · checked Sep 1, 2026
24	Cyderes	Indirect evidence	Calgary, AB, CA	1,001-5,000	842 contacts →
	Indirect evidence “Today’s threatscape is relentless.” Source: RevenueBase Database · checked Sep 1, 2026
25	SQUAD	Indirect evidence	Carouge, CH	501-1,000	804 contacts →
	Indirect evidence “The growing threat of cyber risks, the expansion of cloud computing and the emergence of the DevOps movement are reshaping IT practices, enlighting the relevance of our vision for…” Source: RevenueBase Database · checked Sep 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 consultancy 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 consultancy companies.
Partial evidence: Its own public description names part of cybersecurity consultancy companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name cybersecurity consultancy 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 28,037 cybersecurity consultancy companies worldwide

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Cybersecurity consultancy companies worldwide at a glance

As of Sep 1, 2026

34.0%Verified-email coverage

14.3%Mobile-number coverage

14.3Average contacts per company

1-10Median size (employees)

3.1%Largest-city concentration · London

Sep 1, 2026Page data refreshed

Companies by employee count

1-10

16,001

11-50

8,930

51-200

2,249

201-500

461

501-1,000

138

1,001-5,000

114

5,001-10,000

10001+

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 consultancy 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.
Coverage: 72 countries, largest first: the United States, India, the United Kingdom, France, Australia, Canada, Brazil, Germany, the Netherlands, Italy and 62 more. Country and city lists for cybersecurity consultancy companies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “cybersecurity consultancy 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 consultancy 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 consultancy companies, 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, 136,225 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 between September 1, 2026 and September 14, 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 consultancy companies by location

195 lists · largest first

Every Cybersecurity consultancy companies 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 cybersecurity consultancy companies, 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 consultancy companies are there worldwide?

RevenueBase identified 28,037 cybersecurity consultancy companies 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?

Palo Alto Networks, headquartered in He, tops this list with the largest team on record.

Which country has the most cybersecurity consultancy companies?

The United States leads with 8,085 companies, followed by India (2,438) and the United Kingdom (2,260). Every cybersecurity consultancy companies list by country and city is linked on this page.

Which city has the most cybersecurity consultancy companies?

London leads with 861 headquartered companies, followed by Sao Paulo (349) and Paris (348).

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 136,225 verified decision-maker contacts tracked across these 28,037 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled from the company graph between September 1, 2026 and September 14, 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.