Company lists · Data refreshed September 2026

Top 25 Cybersecurity consultants worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Sep 24, 2026 33,629 companies tracked

RevenueBase identified 33,629 cybersecurity consultants worldwide as of September 2026 and tracks 505,796 professional contacts across them, including 193,104 with verified work emails and 100,327 with mobile numbers. The United States is the largest market and London the largest hub.

This list covers cybersecurity consultants 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 24, 2026. Country and city lists for cybersecurity consultants 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 24, 2026 86% judged on-target in blind review

33,629Companies

505,796Contacts tracked

193,104Verified emails

100,327Mobile numbers

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The 25 largest cybersecurity consultants worldwide

Ranked by team size

Top 25 of 33,629 cybersecurity consultants worldwide, ranked by team size, largest first. Data refreshed Sep 24, 2026. RevenueBase Smart Search rates how each company's information relates to cybersecurity consultants: 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	Santa Clara, CA, United StatesHQ checked Sep 24, 2026	10001+	18,431 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 24, 2026
2	Fortinet	Indirect evidence	Sunnyvale, CA, United StatesHQ checked Sep 24, 2026	10001+	14,289 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 24, 2026
3	Symantec	Partial evidence	San Jose, CA, United StatesHQ checked Sep 24, 2026	10001+	11,169 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 24, 2026
4	Convergint	Indirect evidence	Hoffman Estates, IL, United StatesHQ checked Sep 24, 2026	10001+	5,707 contacts →
	Indirect evidence “Convergint is a global systems integrator focused on delivering results for our customers through unparalleled service excellence.” Source: RevenueBase Database · checked Sep 24, 2026
5	Sophos	Partial evidence	Abingdon, United KingdomHQ checked Sep 24, 2026	5,001-10,000	4,925 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 24, 2026
6	Orange Cyberdefense	Partial evidence	Nanterre, FranceHQ checked Sep 24, 2026	1,001-5,000	3,673 contacts →
	Partial evidence “Orange Cyberdefense is the expert cybersecurity business unit of the Orange Group.” Source: RevenueBase Database · checked Sep 24, 2026
7	Bugcrowd	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 24, 2026	n/a	3,649 contacts →
	Indirect evidence “We are a crowdsourced security company that safeguards organizations' assets from sophisticated threat actors before they can strike-by uniting our customers with trusted hackers…” Source: RevenueBase Database · checked Sep 24, 2026
8	Trellix	Partial evidence	Plano, TX, United StatesHQ checked Sep 24, 2026	1,001-5,000	3,447 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 24, 2026
9	Arctic Wolf	Indirect evidence	Eden Prairie, MN, United StatesHQ checked Sep 24, 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 24, 2026
10	BAE Systems Digital Intelligence	Indirect evidence	Canberra, United KingdomHQ checked Sep 24, 2026	1,001-5,000	2,947 contacts →
	Indirect evidence “Digital Intelligence is home to over 4,500 digital, cyber and intelligence experts across 13 countries.” Source: RevenueBase Database · checked Sep 24, 2026
11	Sailpoint	Indirect evidence	Austin, TX, United StatesHQ checked Sep 24, 2026	1,001-5,000	2,886 contacts →
	Indirect evidence “SailPoint equips the modern enterprise to seamlessly manage and secure access to applications and data through the lens of identity – at speed and scale.” Source: RevenueBase Database · checked Sep 24, 2026
12	Rapid7	Partial evidence	Boston, MA, United StatesHQ checked Sep 24, 2026	1,001-5,000	2,822 contacts →
	Partial evidence “Rapid7, Inc.(NASDAQ: RPD) is a global leader in AI-powered managed cybersecurity operations, trusted to advance organizations’ cyber resilience.” Source: RevenueBase Database · checked Sep 24, 2026
13	NIL LTD	Indirect evidence	Ljubljana, SloveniaHQ checked Sep 24, 2026	n/a	2,523 contacts →
	Indirect evidence “NIL is a globally recognized provider of advanced data center, network, cloud, cyber security solutions as well as services for business and industry environments, state…” Source: RevenueBase Database · checked Sep 24, 2026
14	OPTIV	Indirect evidence	Leawood, KS, United StatesHQ checked Sep 24, 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 24, 2026
15	Bitdefender	Partial evidence	Bucuresti, RomaniaHQ checked Sep 24, 2026	1,001-5,000	2,172 contacts →
	Partial evidence “Bitdefender is a cybersecurity leader delivering best-in-class threat prevention, detection, and response solutions worldwide.” Source: RevenueBase Database · checked Sep 24, 2026
16	Barracuda	Partial evidence	Campbell, CA, United StatesHQ checked Sep 24, 2026	1,001-5,000	2,157 contacts →
	Partial evidence “Barracuda is a leading global cybersecurity company providing complete protection against complex threats for all size business.” Source: RevenueBase Database · checked Sep 24, 2026
17	Paragon Systems INC	Partial evidence	Herndon, VA, United StatesHQ checked Sep 24, 2026	10001+	1,949 contacts →
	Partial evidence “Paragon Systems employs over 10,500 professionals in specialized operations providing security, fire, investigations, inspections, cybersecurity, risk management, and mission…” Source: RevenueBase Database · checked Sep 24, 2026
18	Sans Institute	Partial evidence	Rockville, MD, United StatesHQ checked Sep 24, 2026	n/a	1,886 contacts →
	Partial evidence “SANS is the most trusted and by far the largest source for information and cybersecurity training and certification in the world.” Source: RevenueBase Database · checked Sep 24, 2026
19	Beyondtrust	Partial evidence	Johns Creek, GA, United StatesHQ checked Sep 24, 2026	1,001-5,000	1,669 contacts →
	Partial evidence “BeyondTrust is the global cybersecurity leader protecting Paths to Privilege™.” Source: RevenueBase Database · checked Sep 24, 2026
20	Fortra	Partial evidence	Eden Prairie, MN, United StatesHQ checked Sep 24, 2026	1,001-5,000	1,648 contacts →
	Partial evidence “Fortra delivers AI-amplified cybersecurity solutions that help organizations use and protect data with confidence.” Source: RevenueBase Database · checked Sep 24, 2026
21	Forcepoint	Indirect evidence	Austin, TX, United StatesHQ checked Sep 24, 2026	1,001-5,000	1,636 contacts →
	Indirect evidence “Forcepoint simplifies security for global businesses and governments.” Source: RevenueBase Database · checked Sep 24, 2026
22	Nava Tech For Business	Indirect evidence	Barueri, BrazilHQ checked Sep 24, 2026	1,001-5,000	1,452 contacts →
	Indirect evidence “Atuamos no core de empresas líderes em seus segmentos, onde tecnologia, estratégia e operação se encontram.” Source: RevenueBase Database · checked Sep 24, 2026
23	Airbus Protect	Partial evidence	Blagnac, FranceHQ checked Sep 24, 2026	1,001-5,000	1,431 contacts →
	Partial evidence “Airbus Protect is an Airbus subsidiary bringing together expertise in cybersecurity, safety and sustainability-related services.” Source: RevenueBase Database · checked Sep 24, 2026
24	Ec-Council	Indirect evidence	Albuquerque, NM, United StatesHQ checked Sep 24, 2026	1,001-5,000	1,294 contacts →
	Indirect evidence “EC-Council is the creator of the globally renowned Certified Ethical Hacker (CEH) program.” Source: RevenueBase Database · checked Sep 24, 2026
25	Reliaquest	Indirect evidence	Tampa, FL, United StatesHQ checked Sep 24, 2026	1,001-5,000	1,285 contacts →
	Indirect evidence “ReliaQuest exists to Make Security Possible.” Source: RevenueBase Database · checked Sep 24, 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 consultants. 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 consultants.
Partial evidence: Its own public description names part of cybersecurity consultants, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name cybersecurity consultants. 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 33,629 cybersecurity consultants worldwide

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Cybersecurity consultants worldwide at a glance

As of Sep 24, 2026

38.2%Verified-email coverage

19.8%Mobile-number coverage

15.0Average contacts per company

1-10Median size (employees)

3.6%Largest-city concentration · London

Sep 24, 2026Page data refreshed

Companies by employee count

1-10

20,487

11-50

9,679

51-200

2,470

201-500

534

501-1,000

181

1,001-5,000

160

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 consultants, 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: 40 countries, largest first: the United States, the United Kingdom, France, Brazil, Canada, Australia, Germany, the Netherlands, Italy, Spain and 30 more. Country and city lists for cybersecurity consultants are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “cybersecurity consultants”. 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 consultants), 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 consultants, 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, 193,104 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 24, 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 consultants by location

170 lists · largest first

Every Cybersecurity consultants 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 consultants, 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 consultants are there worldwide?

RevenueBase identified 33,629 cybersecurity consultants 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 Santa Clara, tops this list with the largest team on record.

Which country has the most cybersecurity consultants?

The United States leads with 13,370 companies, followed by the United Kingdom (3,276) and France (1,887). Every cybersecurity consultants list by country and city is linked on this page.

Which city has the most cybersecurity consultants?

London leads with 1217 headquartered companies, followed by Sao Paulo (515) and Paris (510).

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 193,104 verified decision-maker contacts tracked across these 33,629 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 24, 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.