Company lists · Data refreshed October 2026

Top 25 Cyber security consultancies worldwide

Name: Cyber security consultancies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 1, 2026 33,929 companies tracked

RevenueBase identified 33,929 cyber security consultancies worldwide as of October 2026 and tracks 416,069 professional contacts across them, including 125,125 with verified work emails. The United States is the largest market and London the largest hub.

This list covers cyber security 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 October 1, 2026. Country and city lists for cyber security 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 Oct 1, 2026 86% judged on-target in blind review

33,929Companies

416,069Contacts tracked

125,125Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest cyber security consultancies worldwide

Ranked by team size

Top 25 of 33,929 cyber security consultancies worldwide, ranked by team size, largest first. Data refreshed Oct 1, 2026. RevenueBase Smart Search rates how each company's information relates to cyber security 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	Fortinet	Indirect evidence	Sunnyvale, CA, United StatesHQ checked Oct 1, 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 Oct 1, 2026
2	Private Sector	Indirect evidence	United StatesHQ checked Oct 1, 2026	n/a	12,771 contacts →
	Indirect evidence Source: RevenueBase Database · checked Oct 1, 2026
3	Symantec	Partial evidence	San Jose, CA, United StatesHQ checked Oct 1, 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 Oct 1, 2026
4	Sophos	Indirect evidence	Abingdon, United KingdomHQ checked Oct 1, 2026	5,001-10,000	4,925 contacts →
	Indirect evidence “Sophos is a cybersecurity leader defending organizations globally with an AI-driven platform and expert-led services.” Source: RevenueBase Database · checked Oct 1, 2026
5	Orange Cyberdefense	Indirect evidence	Nanterre, FranceHQ checked Oct 1, 2026	1,001-5,000	3,673 contacts →
	Indirect evidence “Orange Cyberdefense is the expert cybersecurity business unit of the Orange Group.” Source: RevenueBase Database · checked Oct 1, 2026
6	Trellix	Strong evidence	Plano, TX, United StatesHQ checked Oct 1, 2026	1,001-5,000	3,447 contacts →
	Strong 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 Oct 1, 2026
7	OPTIV	Partial evidence	Leawood, KS, United StatesHQ checked Oct 1, 2026	1,001-5,000	2,222 contacts →
	Partial 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 Oct 1, 2026
8	Inspira Enterprise	Indirect evidence	Mumbai, IndiaHQ checked Oct 1, 2026	1,001-5,000	1,773 contacts →
	Indirect 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 Oct 1, 2026
9	Fortra	Indirect evidence	Eden Prairie, MN, United StatesHQ checked Oct 1, 2026	1,001-5,000	1,648 contacts →
	Indirect evidence “Fortra delivers AI-amplified cybersecurity solutions that help organizations use and protect data with confidence.” Source: RevenueBase Database · checked Oct 1, 2026
10	Nava Tech For Business	Indirect evidence	Barueri, BrazilHQ checked Oct 1, 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 Oct 1, 2026
11	Airbus Protect	Indirect evidence	Blagnac, FranceHQ checked Oct 1, 2026	1,001-5,000	1,431 contacts →
	Indirect evidence “Airbus Protect is an Airbus subsidiary bringing together expertise in cybersecurity, safety and sustainability-related services.” Source: RevenueBase Database · checked Oct 1, 2026
12	Site سايت	Indirect evidence	Al Nakheel, Saudi ArabiaHQ checked Oct 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 Oct 1, 2026
13	Thales Cybersecurity Products	Indirect evidence	Austin, TX, United StatesHQ checked Oct 1, 2026	1,001-5,000	1,252 contacts →
	Indirect 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 Oct 1, 2026
14	Guidepoint Security	Partial evidence	Reston, VA, United StatesHQ checked Oct 1, 2026	1,001-5,000	1,232 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 Oct 1, 2026
15	Imperva	Indirect evidence	Austin, TX, United StatesHQ checked Oct 1, 2026	10001+	1,217 contacts →
	Indirect evidence “On Dec.” Source: RevenueBase Database · checked Oct 1, 2026
16	Tahaluf AL Emarat Technical Solutions تحالف الإمارات للحلول التقنية	Indirect evidence	Abu Dhabi, United Arab EmiratesHQ checked Oct 1, 2026	501-1,000	1,159 contacts →
	Indirect 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 Oct 1, 2026
17	Irdeto	Indirect evidence	Hoofddorp, NetherlandsHQ checked Oct 1, 2026	1,001-5,000	1,026 contacts →
	Indirect evidence “Irdeto, a CANAL+ company, is the world leader in digital platform cybersecurity, empowering businesses to innovate for a secure, connected future.” Source: RevenueBase Database · checked Oct 1, 2026
18	PPC	Indirect evidence	Trevose, PA, United StatesHQ checked Oct 1, 2026	201-500	979 contacts →
	Indirect evidence “PPC is now part of DSA” Source: RevenueBase Database · checked Oct 1, 2026
19	Coalfire	Indirect evidence	Chicago, IL, United StatesHQ checked Oct 1, 2026	1,001-5,000	947 contacts →
	Indirect 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 Oct 1, 2026
20	BCG Platinion	Indirect evidence	Cologne, GermanyHQ checked Oct 1, 2026	1,001-5,000	925 contacts →
	Indirect evidence “At BCG Platinion, we leverage our expertise alongside the unique experiences of our teams to accelerate digital transformations for our clients.” Source: RevenueBase Database · checked Oct 1, 2026
21	Zerofox	Partial evidence	Baltimore, MD, United StatesHQ checked Oct 1, 2026	501-1,000	904 contacts →
	Partial evidence “ZeroFox is the solution to discover, validate, and disrupt external cyber threats before they harm revenue or reputation.” Source: RevenueBase Database · checked Oct 1, 2026
22	Ensign Infosecurity	Indirect evidence	SingaporeHQ checked Oct 1, 2026	501-1,000	888 contacts →
	Indirect evidence “Ensign InfoSecurity is the largest pure-play end-to-end cybersecurity service provider in Asia.” Source: RevenueBase Database · checked Oct 1, 2026
23	Trustwave, A Levelblue Company	Partial evidence	Chicago, IL, United StatesHQ checked Oct 1, 2026	501-1,000	874 contacts →
	Partial evidence “Trustwave, a LevelBlue Company, is a globally recognized cybersecurity leader that reduces cyber risk and fortifies organizations against disruptive and damaging cyber threats.” Source: RevenueBase Database · checked Oct 1, 2026
24	ALLOT	Indirect evidence	Hod-hasharon, IsraelHQ checked Oct 1, 2026	501-1,000	856 contacts →
	Indirect 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 Oct 1, 2026
25	Cyderes	Indirect evidence	Kansas City, MO, United StatesHQ checked Oct 1, 2026	1,001-5,000	844 contacts →
	Indirect evidence “Today’s threatscape is relentless.” 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: cyber security 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 cyber security consultancies.
Partial evidence: Its own public description names part of cyber security consultancies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name cyber security 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 33,929 cyber security consultancies worldwide

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 125,125 reachable decision-makers.

Free signup · no credit card

View the full list →

Cyber security consultancies worldwide at a glance

As of Oct 1, 2026

30.1%Verified-email coverage

12.3Average contacts per company

1-10Median size (employees)

2.5%Largest-city concentration · London

Oct 1, 2026Page data refreshed

Companies by employee count

1-10

20,122

11-50

10,366

51-200

2,522

201-500

554

501-1,000

146

1,001-5,000

124

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 cyber security 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 cyber security consultancies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “cyber security 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 cyber security 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 cyber security 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, 125,125 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.

Cyber security consultancies by location

210 lists · largest first

Every Cyber security 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 cyber security 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 cyber security consultancies are there worldwide?

RevenueBase identified 33,929 cyber security consultancies worldwide as of October 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?

Fortinet, headquartered in Sunnyvale, tops this list with the largest team on record.

Which country has the most cyber security consultancies?

The United States leads with 7,935 companies, followed by India (2,449) and the United Kingdom (2,283). Every cyber security consultancies list by country and city is linked on this page.

Which city has the most cyber security consultancies?

London leads with 853 headquartered companies, followed by Paris (358) and Sao Paulo (337).

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 125,125 verified decision-maker contacts tracked across these 33,929 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on October 1, 2026.

Ready to reach these companies? Verified emails and direct dials for all 33,929 cyber security consultancies worldwide. Start with a free account, no credit card.

Download this list →

Related lists

Browse the directory

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.