Company lists · Data refreshed September 2026

Top 25 Accounting firm cybersecurity companies worldwide

Name: Accounting firm cybersecurity companies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 27, 2026 6,538 companies tracked

RevenueBase identified 6,538 accounting firm cybersecurity companies worldwide as of September 2026 and tracks 71,525 professional contacts across them, including 22,000 with verified work emails. The United States is the largest market and London the largest hub.

This list covers accounting firm cybersecurity companies 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 September 27, 2026. Country and city lists for accounting firm cybersecurity companies 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 Sep 27, 2026 86% judged on-target in blind review

6,538Companies

71,525Contacts tracked

22,000Verified emails

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The 25 largest accounting firm cybersecurity companies worldwide

Ranked by team size

Top 25 of 6,538 accounting firm cybersecurity companies worldwide, ranked by team size, largest first. Data refreshed Sep 27, 2026. RevenueBase Smart Search rates how each company's information relates to accounting firm cybersecurity companies: 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	Guidepoint Security	Partial evidence	Reston, VA, United StatesHQ checked Sep 27, 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 Sep 27, 2026
2	Nangia & CO LLP	Indirect evidence	Delhi-ncr, IndiaHQ checked Sep 27, 2026	1,001-5,000	952 contacts →
	Indirect evidence “Nangia & Co LLP stands as a preeminent one of the top leading CA firm in India with a remarkable four-decade legacy of enriching the business landscape for an extensive clientele…” Source: RevenueBase Database · checked Sep 27, 2026
3	Coalfire	Partial evidence	Chicago, IL, United StatesHQ checked Sep 27, 2026	1,001-5,000	947 contacts →
	Partial 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 Sep 27, 2026
4	PKF Sridhar & Santhanam LLP	Indirect evidence	Chennai, IndiaHQ checked Sep 27, 2026	501-1,000	916 contacts →
	Indirect evidence “Established in 1978, PKF Sridhar & Santhanam LLP firm of Chartered Accountants, carry the legacy of vast experience and varied exposure in the industry.” Source: RevenueBase Database · checked Sep 27, 2026
5	Frank, Rimerman Co. LLP	Indirect evidence	Palo Alto, CA, United StatesHQ checked Sep 27, 2026	501-1,000	893 contacts →
	Indirect evidence “Established in 1949, our firm is unique for its pervasive passion and nimble delivery of over 75 years of experience.” Source: RevenueBase Database · checked Sep 27, 2026
6	Network Intelligence	Indirect evidence	Plano, TX, United StatesHQ checked Sep 27, 2026	501-1,000	641 contacts →
	Indirect evidence “At Network Intelligence, we combine our team of 500+ security professionals with Transilience – our cutting-edge AI platform.” Source: RevenueBase Database · checked Sep 27, 2026
7	I-Tracing	Partial evidence	Courbevoie, FranceHQ checked Sep 27, 2026	1,001-5,000	639 contacts →
	Partial evidence “I-TRACING, pure player and cybersecurity service provider leader in France, supports over 600 clients around the world in managing their cyber risks, from anticipating threats to…” Source: RevenueBase Database · checked Sep 27, 2026
8	Advens	Partial evidence	Paris, ItalyHQ checked Sep 27, 2026	501-1,000	586 contacts →
	Partial evidence “Advens is a European, independent and outstanding leader in cybersecurity.” Source: RevenueBase Database · checked Sep 27, 2026
9	Paramount Computer Systems	Indirect evidence	Dubai, United Arab EmiratesHQ checked Sep 27, 2026	201-500	525 contacts →
	Indirect evidence “Protection is Paramount!” Source: RevenueBase Database · checked Sep 27, 2026
10	own.security	Partial evidence	Paris, FranceHQ checked Sep 27, 2026	51-200	506 contacts →
	Partial evidence “Founded in 2008, OWN is a Pure Player in cybersecurity, with offices in Paris, Rennes and Toulouse, but with a presence throughout France with its fully remote employees.” Source: RevenueBase Database · checked Sep 27, 2026
11	Protechmanize	Partial evidence	Thane, IndiaHQ checked Sep 27, 2026	501-1,000	484 contacts →
	Partial evidence “At ProTechmanize, we’re committed to making cybersecurity simpler, stronger, and more future ready for the organizations we serve.” Source: RevenueBase Database · checked Sep 27, 2026
12	Ecovis Saudi Arabia Ecovis AL Sabti	Indirect evidence	Riyadh, Saudi ArabiaHQ checked Sep 27, 2026	51-200	409 contacts →
	Indirect evidence “ECOVIS Al Sabti, in the Kingdom of Saudi Arabia, is a member firm of the ECOVIS International network.” Source: RevenueBase Database · checked Sep 27, 2026
13	Safeway	Indirect evidence	Sao Paulo, BrazilHQ checked Sep 27, 2026	201-500	399 contacts →
	Indirect evidence “A SAFEWAY empresa que integra a plataforma de cibersegurança do Grupo Stefanini se une a Protega.” Source: RevenueBase Database · checked Sep 27, 2026
14	Pbmares, LLP	Partial evidence	Newport News, VA, United StatesHQ checked Sep 27, 2026	201-500	393 contacts →
	Partial evidence “PBMares is a Certified Public Accounting and consulting firm focused on serving the audit, tax, accounting, and consulting needs of companies and individuals.” Source: RevenueBase Database · checked Sep 27, 2026
15	Redw Advisors & Cpas	Indirect evidence	Albuquerque, NM, United StatesHQ checked Sep 27, 2026	201-500	392 contacts →
	Indirect evidence “Since 1953, REDW Advisors & CPAs has been fully committed to the success of our clients.” Source: RevenueBase Database · checked Sep 27, 2026
16	IBN Technologies	Partial evidence	Miami, FL, United StatesHQ checked Sep 27, 2026	51-200	365 contacts →
	Partial evidence “Welcome to IBN Technologies, LLC, Your Trusted Partner in Cybersecurity, Cloud, and Finance Solutions With 26+ years of expertise, IBN Technologies leads in delivering integrated…” Source: RevenueBase Database · checked Sep 27, 2026
17	Esec Forte Technologies	Indirect evidence	Gurugram, IndiaHQ checked Sep 27, 2026	201-500	363 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 27, 2026
18	T Security - Dach	Indirect evidence	Bonn, GermanyHQ checked Sep 27, 2026	1,001-5,000	363 contacts →
	Indirect evidence “Wir glauben an eine sichere digitale Zukunft mit minimalen Risiken und maximalen Chancen.” Source: RevenueBase Database · checked Sep 27, 2026
19	Clark Nuber PS	Partial evidence	Bellevue, WA, United StatesHQ checked Sep 27, 2026	201-500	347 contacts →
	Partial evidence “Clark Nuber is an award-winning Certified Public Accounting firm located in the Seattle Metro Area.” Source: RevenueBase Database · checked Sep 27, 2026
20	Truesec	Indirect evidence	SwedenHQ checked Sep 27, 2026	201-500	332 contacts →
	Indirect evidence “Prevent Breach & Minimize Impact” Source: RevenueBase Database · checked Sep 27, 2026
21	Richey MAY	Strong evidence	Englewood, CO, United StatesHQ checked Sep 27, 2026	201-500	318 contacts →
	Strong evidence “Richey May is a Top 50 accounting, advisory, and cybersecurity firm helping organizations navigate complexity, manage risk, and achieve sustainable growth.” Source: RevenueBase Database · checked Sep 27, 2026
22	Security Risk Advisors	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 27, 2026	201-500	315 contacts →
	Partial evidence “We deliver cybersecurity consulting, 24x7 operations and SaaS to leading companies in the Financial Services, Healthcare, Pharmaceuticals, Technology and Retail industries.” Source: RevenueBase Database · checked Sep 27, 2026
23	Nviso Security	Indirect evidence	Brussels, BelgiumHQ checked Sep 27, 2026	201-500	315 contacts →
	Indirect evidence “NVISO is a cyber security services firm composed of outstanding security professionals - each has a specific field of expertise, ranging from security research and risk management…” Source: RevenueBase Database · checked Sep 27, 2026
24	Larsonallen	Indirect evidence	Minneapolis, MN, United StatesHQ checked Sep 27, 2026	1,001-5,000	287 contacts →
	Indirect evidence “Effective January 2, 2012, LarsonAllen and Clifton Gunderson are now CliftonLarsonAllen.” Source: RevenueBase Database · checked Sep 27, 2026
25	Prescient Security	Partial evidence	Nashville, TN, United StatesHQ checked Sep 27, 2026	201-500	272 contacts →
	Partial evidence “Prescient Security is a global cybersecurity and compliance firm delivering risk-based audits, advanced penetration testing, and end-to-end framework support.” Source: RevenueBase Database · checked Sep 27, 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: accounting firm cybersecurity companies. 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 accounting firm cybersecurity companies.
Partial evidence: Its own public description names part of accounting firm cybersecurity companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name accounting firm cybersecurity companies. 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 6,538 accounting firm cybersecurity companies worldwide

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Accounting firm cybersecurity companies worldwide at a glance

As of Sep 27, 2026

30.8%Verified-email coverage

10.9Average contacts per company

1-10Median size (employees)

2.0%Largest-city concentration · London

Sep 27, 2026Page data refreshed

Companies by employee count

1-10

3,777

11-50

2,164

51-200

464

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

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among accounting firm cybersecurity companies, 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 accounting firm cybersecurity companies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “accounting firm cybersecurity companies”. 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 accounting firm cybersecurity companies), 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 accounting firm cybersecurity companies, 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, 22,000 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 September 27, 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.

Accounting firm cybersecurity companies by location

43 lists · largest first

Every Accounting firm cybersecurity 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 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 accounting firm cybersecurity companies, 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 accounting firm cybersecurity companies are there worldwide?

RevenueBase identified 6,538 accounting firm cybersecurity companies worldwide as of September 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?

Guidepoint Security, headquartered in Reston, tops this list with the largest team on record.

Which country has the most accounting firm cybersecurity companies?

The United States leads with 1,855 companies, followed by India (561) and Brazil (344). Every accounting firm cybersecurity companies list by country and city is linked on this page.

Which city has the most accounting firm cybersecurity companies?

London leads with 129 headquartered companies, followed by Sao Paulo (86) and Paris (80).

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 22,000 verified decision-maker contacts tracked across these 6,538 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 27, 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 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.