Company lists · Data refreshed September 2026

Top 25 Information security auditors worldwide

RevenueBase identified 3,578 company matches for information security auditors worldwide as of September 2026 and tracks 43,818 professional contacts across them, including 8,459 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for information security auditors 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 information security auditors 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
3,578Companies
43,818Contacts tracked
8,459Verified emails
Explore this list → Free signup · no credit card · 500 free credits

The 25 largest information security auditors worldwide

Ranked by team size
Top 25 of 3,578 company matches for information security auditors 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchUnited StatesHQ recorded Sep 28, 2026n/a12,771 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
2Exact matchSao Paulo, BrazilHQ recorded Sep 28, 2026201-500399 contacts →

Exact match

“A SAFEWAY empresa que integra a plataforma de cibersegurança do Grupo Stefanini se une a Protega.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
3Exact matchGurugram, IndiaHQ recorded Sep 28, 2026201-500363 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
4Exact matchBonn, GermanyHQ recorded Sep 28, 20261,001-5,000363 contacts →

Exact match

“Wir glauben an eine sichere digitale Zukunft mit minimalen Risiken und maximalen Chancen.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
5Exact matchAhmedabad, IndiaHQ recorded Sep 28, 2026201-500340 contacts →

Exact match

“TechDefence Labs (TechD Cybersecurity Limited) Award-winning | Innovative | Visionary We empower organizations across the globe to secure their applications, networks, and digital…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
6Exact matchNashville, TN, United StatesHQ recorded Sep 28, 2026201-500272 contacts →

Exact match

“Prescient Security is a global cybersecurity and compliance firm delivering risk-based audits, advanced penetration testing, and end-to-end framework support.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
7Exact matchCedar Hill, TX, United StatesHQ recorded Sep 28, 2026201-500255 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
8Exact matchNew York, NY, United StatesHQ recorded Sep 28, 2026201-500243 contacts →

Exact match

“Thoropass is the only end-to-end cybersecurity auditor.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
9Exact matchMumbai, IndiaHQ recorded Sep 28, 2026201-500238 contacts →

Exact match

“Established 26 years ago, Meta Infotech has been a trusted name in Cyber and IT Risk Assessment Services, Cybersecurity Product Consulting, Implementation & Sustenance Services…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
10Exact matchBengaluru, IndiaHQ recorded Sep 28, 202651-200221 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
11Exact matchReston, VA, United StatesHQ recorded Sep 28, 20261,001-5,000204 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
12Exact matchIrvine, CA, United StatesHQ recorded Sep 28, 2026201-500199 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
13Exact matchNY, United StatesHQ recorded Sep 28, 2026201-500186 contacts →

Exact match

“Kualitatem empowers businesses to deliver quality software.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
14Exact matchNoida, IndiaHQ recorded Sep 28, 2026201-500181 contacts →

Exact match

“SDAD Technology Pvt.Ltd.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
15Exact matchTel Aviv, IsraelHQ recorded Sep 28, 202651-200180 contacts →

Exact match

“2Bsecure Ltd.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
16Exact matchTampa, FL, United StatesHQ recorded Sep 28, 2026201-500174 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
17Exact matchChantilly, VA, United StatesHQ recorded Sep 28, 20261,001-5,000170 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
18Exact matchBella Vista, AustraliaHQ recorded Sep 28, 202651-200170 contacts →

Exact match

“Ensuring your business is handling cyber security risks effectively has never been more important.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
19Exact matchHouston, TX, United StatesHQ recorded Sep 28, 202651-200167 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
20Exact matchRehovot, IsraelHQ recorded Sep 28, 202651-200167 contacts →

Exact match

“Citadel is an Information Security Consulting company.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
21Exact matchPune, IndiaHQ recorded Sep 28, 202651-200156 contacts →

Exact match

“At Payatu we believe in following one’s passion and with that thought, we have created a world class team of researchers and executors who are bending the rules to provide state…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
22Exact matchLas Rozas De Madrid, SpainHQ recorded Sep 28, 202651-200145 contacts →

Exact match

“Secure & IT es una empresa especializada en seguridad de la información que trabaja en cinco líneas: compliance, procesos y gobierno IT, sistemas y seguridad IT, seguridad…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
23Exact matchNashville, TN, United StatesHQ recorded Sep 28, 202651-200139 contacts →

Exact match

“KirkpatrickPrice is a licensed information security CPA firm, a PCI QSA, and a HITRUST CSF Assessor, providing assurance services to over clients worldwide.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
24Exact matchFrisco, TX, United StatesHQ recorded Sep 28, 202651-200135 contacts →

Exact match

“HITRUST is the leader in validated cybersecurity assurance used in third-party risk management and compliance.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
25Exact matchCiudad De Buenos Aires, ArgentinaHQ recorded Sep 28, 202651-200133 contacts →

Exact match

“We are BTR Consulting, a flexible, dynamic, and different company with the ability to deliver solutions at both regional and global levels.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase

Showing 25 of 3,578 information security auditors worldwide

See the full list, filter by size, metro and specialty, and access 8,459 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Information security auditors worldwide at a glance

As of Sep 28, 2026
19.3%Verified-email coverage
12.2Average contacts per company
1-10Median size (employees)
1.8%Largest-city concentration · London
Sep 28, 2026Page data refreshed

Companies by employee count

1-10
2,155
11-50
1,136
51-200
217
201-500
49
501-1,000
6
1,001-5,000
6
5,001-10,000
4
10001+
3

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 information security auditors are linked below.
What qualifies
Company records worldwide whose business descriptions match “information security auditors” 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 8,459 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.

Information security auditors by location

23 lists · largest first

Every Information security auditors 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 “information security auditors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many information security auditors are there worldwide?

RevenueBase identified 3,578 company matches for information security auditors 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?

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

Which country has the most information security auditors?

The United States leads with 795 companies, followed by India (348) and the United Kingdom (193). Every information security auditors list by country and city is linked on this page.

Which city has the most information security auditors?

London leads with 64 company records, followed by Paris (48) and Sao Paulo (34).

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 8,459 professional contacts with verified work emails tracked across these 3,578 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.

Ready to reach these companies? Verified emails and direct dials for all 3,578 information security auditors worldwide. Start with a free account, no credit card.

Download this list →

Related lists

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.