Company lists · Data refreshed September 2026

Top 25 Iso 27001 consulting firms worldwide

Name: Iso 27001 consulting firms worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 9,315 companies tracked

RevenueBase identified 9,315 company matches for iso 27001 consulting firms worldwide as of September 2026 and tracks 98,562 professional contacts across them, including 22,927 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for iso 27001 consulting firms 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 September 28, 2026. Country and city lists for iso 27001 consulting firms 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 Sep 28, 2026 How this list was built

9,315Companies

98,562Contacts tracked

22,927Verified emails

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The 25 largest iso 27001 consulting firms worldwide

Ranked by team size

Top 25 of 9,315 company matches for iso 27001 consulting firms worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 28, 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	Autonomo	Exact match	Córdoba, SpainHQ recorded Sep 28, 2026	n/a	23,018 contacts →
	Exact match “Calidad y Gestión es una empresa consultora de ámbito internacional especializada en servicios de asesoría en las siguientes áreas: Calidad Medio Ambiente Responsabilidad social…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
2	DNV	Exact match	Høvik, NorwayHQ recorded Sep 28, 2026	10001+	15,983 contacts →
	Exact match “DNV is the independent expert in risk management and assurance, operating in more than 100 countries.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
3	Guidepoint Security	Exact match	Reston, VA, United StatesHQ recorded Sep 28, 2026	1,001-5,000	1,232 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 · Sep 28, 2026 · View company records in RevenueBase
4	Qseap Infotech PVT LTD	Exact match	Navi Mumbai, IndiaHQ recorded Sep 28, 2026	201-500	400 contacts →
	Exact match “qSEAp is a CERT-IN empanelled, ISO 27001, SOC-2 Type2 and ISO 9001 certified Infosec organization founded in 2011 with a mission to deliver quality products, superior solutions…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
5	Esec Forte Technologies	Exact match	Gurugram, IndiaHQ recorded Sep 28, 2026	201-500	363 contacts →
	Exact match “eSec Forte® Technologies is a CMMi Level 3 certified Global Consulting and IT Security Services company with offerings across Cloud Security, Cyber Forensics, Malware Detection…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
6	Synetis	Exact match	Paris, FranceHQ recorded Sep 28, 2026	201-500	359 contacts →
	Exact match “Founded in 2010, Synetis is the leading independent French consultancy firm specialising in information systems security (ISS).” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
7	Xalient	Exact match	Leeds, United KingdomHQ recorded Sep 28, 2026	201-500	260 contacts →
	Exact match “We are a global boutique, specializing exclusively in the convergence of identity-driven security and networking.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
8	Baxter Clewis Cybersecurity	Exact match	Cedar Hill, TX, United StatesHQ recorded Sep 28, 2026	201-500	255 contacts →
	Exact match “Baxter Clewis Cybersecurity, we bring to the table a unique set of experiences that allow us to best serve your cybersecurity needs.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
9	Cyraacs	Exact match	Bengaluru, IndiaHQ recorded Sep 28, 2026	51-200	221 contacts →
	Exact match “CYRAAC Services Private Limited (CyRAACS) is a leading, technology-first cybersecurity consulting and advisory firm headquartered in India, empanelled with CERT-In and accredited…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
10	Redbelt Security	Exact match	Sao Paulo, BrazilHQ recorded Sep 28, 2026	51-200	215 contacts →
	Exact match “O nosso trabalho é proteger o seu.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
11	Mindpoint Group, A Quantum SKY Company	Exact match	Reston, VA, United StatesHQ recorded Sep 28, 2026	1,001-5,000	204 contacts →
	Exact match “MindPoint Group, a Quantum Sky company, is a cybersecurity specialist trusted by U.S.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
12	Tevora	Exact match	Irvine, CA, United StatesHQ recorded Sep 28, 2026	201-500	199 contacts →
	Exact match “Founded in 2003, Tevora is a specialized management consultancy focused on cybersecurity, risk, and compliance services.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
13	DAGMA	Exact match	Katowice, PolandHQ recorded Sep 28, 2026	201-500	192 contacts →
	Exact match “DAGMA Bezpieczeństwo IT to firma z 40-letnim doświadczeniem, specjalizująca się w cyberbezpieczeństwie.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
14	operum.tech	Exact match	London, United KingdomHQ recorded Sep 28, 2026	n/a	186 contacts →
	Exact match “IT support for businesses in London.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
15	Govertis	Exact match	Madrid, SpainHQ recorded Sep 28, 2026	51-200	183 contacts →
	Exact match “Expertos en Ciberseguridad, Privacidad, GRC, IRM y Cumplimiento Normativo unificando la perspectiva Legal y Tecnológica GOVERTIS es la mayor firma de Advisory 100% especializada…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
16	QRC Assurance And Solutions	Exact match	Navi Mumbai, IndiaHQ recorded Sep 28, 2026	51-200	181 contacts →
	Exact match “QRC Assurance and Solutions has been a forerunner on the cybersecurity front, empanelled with CERT-in, certified to provide PCI DSS QSA, PA QSA, PCI 3DS, PCI SSF, ISO 27001, ISO…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
17	Matrix 2bsecure	Exact match	Tel Aviv, IsraelHQ recorded Sep 28, 2026	51-200	180 contacts →
	Exact match “2Bsecure Ltd.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
18	Insight Assurance	Exact match	Tampa, FL, United StatesHQ recorded Sep 28, 2026	201-500	174 contacts →
	Exact match “Insight Assurance is a security and compliance firm trusted by more than 1,500 organizations for their SOC 1, SOC 2, SOC 3, PCI DSS, ISO 27001, ISO 27017/27018, ISO 27701, ISO…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
19	Ampcus Cyber	Exact match	Chantilly, VA, United StatesHQ recorded Sep 28, 2026	1,001-5,000	170 contacts →
	Exact match “Trusted By 2,880+ World-Class Brands And Organizations Of All Sizes…!” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
20	Valuementor	Exact match	Houston, TX, United StatesHQ recorded Sep 28, 2026	51-200	167 contacts →
	Exact match “ValueMentor is a global information security consulting & services company that delivers real results to global business in maximizing cybersecurity.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
21	Citadel Cyber Security	Exact match	Rehovot, IsraelHQ recorded Sep 28, 2026	51-200	167 contacts →
	Exact match “Citadel is an Information Security Consulting company.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
22	Cyberpwn Technologies	Exact match	Bangalore, IndiaHQ recorded Sep 28, 2026	51-200	166 contacts →
	Exact match “CyberPWN is a pure-play cybersecurity consultancy and advisory firm With extensive experience in the cybersecurity field and a consultative approach, we are committed to ensuring…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
23	Adacom	Exact match	Athens, GreeceHQ recorded Sep 28, 2026	51-200	159 contacts →
	Exact match “ADACOM, a Byte subsidiary, enables security online for Financial Institutions, Telecom Operators, Governments and Large Organizations, in more than 30 countries in EMEA.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
24	BDO IT Consulting	Exact match	Port Louis, MauritiusHQ recorded Sep 28, 2026	51-200	153 contacts →
	Exact match “BDO IT Consulting is a trustworthy firm with a strong and longstanding reputation that has extensive local and international experience in providing IT Governance and Consulting…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
25	Penta Security Solutions	Exact match	Comuna 15, ArgentinaHQ recorded Sep 28, 2026	51-200	146 contacts →
	Exact match “It is led by a group of information security specialists with extensive experience in large local and international companies, whose professional development has begun in one of…” Recorded in the RevenueBase company graph · Sep 28, 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 “iso 27001 consulting firms”. 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 9,315 iso 27001 consulting firms worldwide

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Iso 27001 consulting firms worldwide at a glance

As of Sep 28, 2026

23.3%Verified-email coverage

10.6Average contacts per company

1-10Median size (employees)

1.8%Largest-city concentration · London

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

6,514

11-50

2,270

51-200

397

201-500

501-1,000

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 iso 27001 consulting firms are linked below.
What qualifies: Company records worldwide whose business descriptions match “iso 27001 consulting firms” 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 22,927 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 September 28, 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.

Iso 27001 consulting firms by location

54 lists · largest first

Every Iso 27001 consulting firms 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 “iso 27001 consulting firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many iso 27001 consulting firms are there worldwide?

RevenueBase identified 9,315 company matches for iso 27001 consulting firms worldwide as of September 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?

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

Which country has the most iso 27001 consulting firms?

The United States leads with 1,126 companies, followed by the United Kingdom (684) and Germany (557). Every iso 27001 consulting firms list by country and city is linked on this page.

Which city has the most iso 27001 consulting firms?

London leads with 167 company records, followed by Sao Paulo (122) and Paris (110).

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 22,927 professional contacts with verified work emails tracked across these 9,315 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 September 28, 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.