Company lists · Data refreshed October 2026

Top 25 Cyber defense consultants worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Oct 11, 2026 25,322 companies tracked

RevenueBase identified 25,322 company matches for cyber defense consultants worldwide as of October 2026 and tracks 337,116 professional contacts across them, including 96,492 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for cyber defense consultants worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed October 11, 2026. Country and city lists for cyber defense consultants follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 SmartSearch · Exact Recorded Oct 11, 2026 How this list was built

25,322Companies

337,116Contacts tracked

96,492Verified emails

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The 25 largest cyber defense consultants worldwide

Ranked by team size

Top 25 of 25,322 company matches for cyber defense consultants worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 11, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Fortinet	Exact match	Sunnyvale, CA, United StatesHQ recorded Oct 11, 2026	10001+	14,972 contacts →
	Exact match “Fortinet makes possible a digital world that we can always trust through its mission to protect people, devices, and data everywhere.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
2	Private Sector	Exact match	United StatesHQ recorded Oct 11, 2026	n/a	12,822 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
3	Symantec	Exact match	San Jose, CA, United StatesHQ recorded Oct 11, 2026	10001+	11,671 contacts →
	Exact match “Your backstage pass to the most epic cybersecurity solutions on the market for Endpoint, Network, Data and Cloud security.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
4	Sophos	Exact match	Abingdon, United KingdomHQ recorded Oct 11, 2026	5,001-10,000	5,139 contacts →
	Exact match “Sophos, a global cybersecurity leader, defends more than organizations worldwide with Sophos Fusion, the industry's first and most complete AI-native cybersecurity defense system…” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
5	Orange Cyberdefense	Exact match	Nanterre, FranceHQ recorded Oct 11, 2026	1,001-5,000	3,903 contacts →
	Exact match “Orange Cyberdefense is the expert cybersecurity business unit of the Orange Group.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
6	Trellix	Exact match	Plano, TX, United StatesHQ recorded Oct 11, 2026	1,001-5,000	3,439 contacts →
	Exact match “Trellix is a global cybersecurity company delivering intelligence-led cyber resilience for security-conscious organizations at any stage of their journey.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
7	OPTIV	Exact match	Leawood, KS, United StatesHQ recorded Oct 11, 2026	1,001-5,000	2,128 contacts →
	Exact match “Optiv is the cyber advisory and solutions leader, delivering strategic and technical expertise to nearly companies across every major industry.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
8	Nava Tech For Business	Exact match	Barueri, BrazilHQ recorded Oct 11, 2026	1,001-5,000	1,548 contacts →
	Exact match “Atuamos no core de empresas líderes em seus segmentos, onde tecnologia, estratégia e operação se encontram.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
9	Site سايت	Exact match	Al Nakheel, Saudi ArabiaHQ recorded Oct 11, 2026	501-1,000	1,453 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
10	Thales Cybersecurity Products	Exact match	Austin, TX, United StatesHQ recorded Oct 11, 2026	1,001-5,000	1,370 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
11	Guidepoint Security	Exact match	Reston, VA, United StatesHQ recorded Oct 11, 2026	1,001-5,000	1,328 contacts →
	Exact match “GuidePoint Security provides trusted cybersecurity expertise, solutions, and services that help organizations make informed decisions and minimize risk.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
12	Irdeto	Exact match	Hoofddorp, NetherlandsHQ recorded Oct 11, 2026	1,001-5,000	1,080 contacts →
	Exact match “Irdeto, a CANAL+ company, is the world leader in digital platform cybersecurity, empowering businesses to innovate for a secure, connected future.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
13	PPC	Exact match	Trevose, PA, United StatesHQ recorded Oct 11, 2026	201-500	1,007 contacts →
	Exact match “PPC is now part of DSA” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
14	Ensign Infosecurity	Exact match	SingaporeHQ recorded Oct 11, 2026	501-1,000	965 contacts →
	Exact match “Ensign InfoSecurity is the largest pure-play end-to-end cybersecurity service provider in Asia.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
15	Coalfire	Exact match	Chicago, IL, United StatesHQ recorded Oct 11, 2026	1,001-5,000	954 contacts →
	Exact match “Coalfire is the premier Cybersecurity and Compliance Services leader for the tech, healthcare, and finance industries.(This page is maintained by Marketing.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
16	BCG Platinion	Exact match	Cologne, GermanyHQ recorded Oct 11, 2026	1,001-5,000	953 contacts →
	Exact match “At BCG Platinion, we leverage our expertise alongside the unique experiences of our teams to accelerate digital transformations for our clients.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
17	Quantum SKY	Exact match	Reston, VA, United StatesHQ recorded Oct 11, 2026	1,001-5,000	901 contacts →
	Exact match “Quantum Sky is a mission technology company that builds secure AI, cyber, cloud, and quantum capabilities for defense, intelligence, and federal civilian agencies.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
18	Arcfield	Exact match	Chantilly, VA, United StatesHQ recorded Oct 11, 2026	1,001-5,000	888 contacts →
	Exact match “Arcfield was purpose-built to protect the nation and its allies through innovations in systems engineering and integration, space and mission launch assurance, cybersecurity and…” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
19	ALLOT	Exact match	Hod-hasharon, IsraelHQ recorded Oct 11, 2026	501-1,000	882 contacts →
	Exact match “Allot Ltd.(NASDAQ: ALLT, TASE: ALLT) is a provider of leading innovative converged cybersecurity solutions and network intelligence for service providers and enterprises…” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
20	Cyderes	Exact match	Kansas City, MO, United StatesHQ recorded Oct 11, 2026	1,001-5,000	864 contacts →
	Exact match “Today’s threatscape is relentless.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
21	SQUAD	Exact match	Paris, FranceHQ recorded Oct 11, 2026	501-1,000	812 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
22	Application Specialist Kompany ASK	Exact match	Lansing, MI, United StatesHQ recorded Oct 11, 2026	n/a	801 contacts →
	Exact match “ASK is now Convergence Networks!” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
23	MTI	Exact match	Staines-upon-thames, United KingdomHQ recorded Oct 11, 2026	201-500	784 contacts →
	Exact match “MTI provides award-winning, end-to-end technology solutions and services in cyber security and data centre for over 35 years.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
24	SISA	Exact match	Bangalore, IndiaHQ recorded Oct 11, 2026	201-500	756 contacts →
	Exact match “SISA is a global forensics-driven cybersecurity solutions company, trusted by leading organizations for securing their businesses with robust preventive, detective, and corrective…” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
25	Trustwave, A Levelblue Company	Exact match	Chicago, IL, United StatesHQ recorded Oct 11, 2026	501-1,000	729 contacts →
	Exact match “Trustwave, a LevelBlue Company, is a globally recognized cybersecurity leader that reduces cyber risk and fortifies organizations against disruptive and damaging cyber threats.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “cyber defense consultants”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 25,322 cyber defense consultants worldwide

See the full list, filter by size, metro and specialty, and access 96,492 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Cyber defense consultants worldwide at a glance

As of Oct 11, 2026

28.6%Verified-email coverage

13.3Average contacts per company

1-10Median size (employees)

2.3%Largest-city concentration · London

Oct 11, 2026Page data refreshed

Companies by employee count

1-10

14,899

11-50

7,809

51-200

1,936

201-500

405

501-1,000

115

1,001-5,000

102

5,001-10,000

10001+

Email recency is reported on each country list linked below.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
Coverage: Every country. Country and city lists for cyber defense consultants are linked below.
What qualifies: Company records worldwide whose business descriptions match “cyber defense consultants” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 96,492 professional contacts with verified work emails across the full matched dataset. 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 11, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Cyber defense consultants by location

173 lists · largest first

Every Cyber defense 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 SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “cyber defense consultants”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many cyber defense consultants are there worldwide?

RevenueBase identified 25,322 company matches for cyber defense consultants worldwide as of October 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Fortinet tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most cyber defense consultants?

The United States leads with 6,400 companies, followed by India (1,785) and the United Kingdom (1,478). Every cyber defense consultants list by country and city is linked on this page.

Which city has the most cyber defense consultants?

London leads with 594 company records, followed by Paris (256) and Dubai (230).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 96,492 professional contacts with verified work emails tracked across these 25,322 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on October 11, 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 SmartSearch, 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.