Company lists · Data refreshed November 2026

Top 25 Cyber advisory companies worldwide

Name: Cyber advisory companies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 6, 2026 27,018 companies tracked

RevenueBase identified 27,018 company matches for cyber advisory companies worldwide as of November 2026 and tracks 320,992 professional contacts across them, including 99,395 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for cyber advisory companies 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 November 6, 2026. Country and city lists for cyber advisory companies 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 Nov 6, 2026 How this list was built

27,018Companies

320,992Contacts tracked

99,395Verified emails

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The 25 largest cyber advisory companies worldwide

Ranked by team size

Top 25 of 27,018 company matches for cyber advisory companies worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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	Private Sector	Exact match	United StatesHQ recorded Nov 6, 2026	n/a	13,149 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2	Sophos	Exact match	Abingdon, United KingdomHQ recorded Nov 6, 2026	5,001-10,000	5,283 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 · Nov 6, 2026 · View company records in RevenueBase
3	Orange Cyberdefense	Exact match	Nanterre, FranceHQ recorded Nov 6, 2026	1,001-5,000	3,977 contacts →
	Exact match “Orange Cyberdefense is the expert cybersecurity business unit of the Orange Group.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4	Arctic Wolf	Exact match	Eden Prairie, United StatesHQ recorded Nov 6, 2026	1,001-5,000	3,355 contacts →
	Exact match “Every year new technologies, vendors, and solutions emerge-yet despite this constant innovation, high-profile breaches are all over the headlines.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5	NRI Group	Exact match	Chiyoda-ku, NY, JapanHQ recorded Nov 6, 2026	10001+	3,248 contacts →
	Exact match “We align our goals with our clients’ goals – a true partnership that ensures shared success.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6	OPTIV	Exact match	Leawood, KS, United StatesHQ recorded Nov 6, 2026	1,001-5,000	2,171 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 · Nov 6, 2026 · View company records in RevenueBase
7	Inspira Enterprise	Exact match	Mumbai, IndiaHQ recorded Nov 6, 2026	1,001-5,000	1,859 contacts →
	Exact match “Inspira Enterprise is a global Cybersecurity & Data Analytics & AI services provider with a presence in North America, ASEAN, Middle East, India, and Africa regions.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8	Airbus Protect	Exact match	Blagnac, FranceHQ recorded Nov 6, 2026	1,001-5,000	1,515 contacts →
	Exact match “Airbus Protect is an Airbus subsidiary bringing together expertise in cybersecurity, safety and sustainability-related services.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9	Site سايت	Exact match	Al Nakheel, Saudi ArabiaHQ recorded Nov 6, 2026	501-1,000	1,514 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 · Nov 6, 2026 · View company records in RevenueBase
10	Thales Cybersecurity Products	Exact match	Austin, TX, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,413 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 · Nov 6, 2026 · View company records in RevenueBase
11	Guidepoint Security	Exact match	Reston, VA, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,346 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 · Nov 6, 2026 · View company records in RevenueBase
12	Centric Consulting	Exact match	Dayton, OH, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,159 contacts →
	Exact match “Committed to delivering tailored solutions and unmatched experiences, Centric Consulting is an international business and technology consulting firm that combines the benefits of…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13	Ensign Infosecurity	Exact match	Kuala, SingaporeHQ recorded Nov 6, 2026	501-1,000	989 contacts →
	Exact match “Ensign InfoSecurity is the largest pure-play end-to-end cybersecurity service provider in Asia.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14	Coalfire	Exact match	Chicago, GA, United StatesHQ recorded Nov 6, 2026	1,001-5,000	977 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 · Nov 6, 2026 · View company records in RevenueBase
15	Cyderes	Exact match	Kansas City, MO, United StatesHQ recorded Nov 6, 2026	1,001-5,000	909 contacts →
	Exact match “Cyderes is a global managed cybersecurity services partner dedicated to defending against today’s relentless threatscape.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16	Zerofox	Exact match	Baltimore, VA, United StatesHQ recorded Nov 6, 2026	501-1,000	905 contacts →
	Exact match “ZeroFox is the solution to discover, validate, and disrupt external cyber threats before they harm revenue or reputation.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17	Levelblue	Exact match	Dallas, TX, United StatesHQ recorded Nov 6, 2026	1,001-5,000	829 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18	SQUAD	Exact match	Paris, FranceHQ recorded Nov 6, 2026	501-1,000	827 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 · Nov 6, 2026 · View company records in RevenueBase
19	PSU	Exact match	Beijing, ChinaHQ recorded Nov 6, 2026	n/a	823 contacts →
	Exact match “Since 2006, PSU has been the leading Scandinavian risk and security consultancy in China.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20	Application Specialist Kompany ASK	Exact match	Lansing, MI, United StatesHQ recorded Nov 6, 2026	n/a	806 contacts →
	Exact match “ASK is now Convergence Networks!” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21	SISA	Exact match	Bangalore, IndiaHQ recorded Nov 6, 2026	1,001-5,000	755 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 · Nov 6, 2026 · View company records in RevenueBase
22	Lgs, An IBM Company	Exact match	Québec, QC, CanadaHQ recorded Nov 6, 2026	501-1,000	751 contacts →
	Exact match “A consulting firm providing technology solutions and advisory services to both private and public sector organizations.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23	Bitsight	Exact match	Boston, MA, United StatesHQ recorded Nov 6, 2026	501-1,000	748 contacts →
	Exact match “Bitsight is the global leader in cyber risk intelligence, leveraging advanced AI to empower organizations with precise insights derived from the industry’s most extensive external…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24	Softcell Technologies Global Pvt. LTD	Exact match	Mumbai, IndiaHQ recorded Nov 6, 2026	501-1,000	733 contacts →
	Exact match “With 35 years of experience, Softcell Technologies Global is a trusted IT services provider specialising in (i) IT security and cybersecurity solutions,(ii) cloud / on-premise…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25	SDG Corporation	Exact match	Norwalk, United StatesHQ recorded Nov 6, 2026	201-500	715 contacts →
	Exact match “With more than 30 years of experience partnering with global enterprises on complex business and IT initiatives, SDG is a trusted provider of advisory, transformation, and managed…” Recorded in the RevenueBase company graph · Nov 6, 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 advisory companies”. 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 27,018 cyber advisory companies worldwide

See the full list, filter by size, metro and specialty, and access 99,395 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Cyber advisory companies worldwide at a glance

As of Nov 6, 2026

31.0%Verified-email coverage

11.9Average contacts per company

1-10Median size (employees)

2.6%Largest-city concentration · London

Nov 6, 2026Page data refreshed

Companies by employee count

1-10

16,277

11-50

8,097

51-200

1,960

201-500

394

501-1,000

107

1,001-5,000

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 advisory companies are linked below.
What qualifies: Company records worldwide whose business descriptions match “cyber advisory companies” 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 99,395 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 November 6, 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 advisory companies by location

189 lists · largest first

Every Cyber advisory 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 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 advisory companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many cyber advisory companies are there worldwide?

RevenueBase identified 27,018 company matches for cyber advisory companies worldwide as of November 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?

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

Which country has the most cyber advisory companies?

The United States leads with 6,818 companies, followed by India (1,941) and the United Kingdom (1,760). Every cyber advisory companies list by country and city is linked on this page.

Which city has the most cyber advisory companies?

London leads with 714 company records, followed by Paris (280) and Dubai (272).

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 99,395 professional contacts with verified work emails tracked across these 27,018 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 November 6, 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.