Company lists · Data refreshed September 2026

Top 25 Infrastructure security consultants worldwide

Name: Infrastructure security consultants worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 13,068 companies tracked

RevenueBase identified 13,068 infrastructure security consultants worldwide as of September 2026 and tracks 145,934 professional contacts across them, including 37,194 with verified work emails. The United States is the largest market and London the largest hub.

This list covers infrastructure security consultants 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 28, 2026. Country and city lists for infrastructure security consultants 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 28, 2026 86% judged on-target in blind review

13,068Companies

145,934Contacts tracked

37,194Verified emails

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The 25 largest infrastructure security consultants worldwide

Ranked by team size

Top 25 of 13,068 infrastructure security consultants worldwide, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to infrastructure security consultants: 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	Private Sector	Indirect evidence	United StatesHQ checked Sep 28, 2026	n/a	12,771 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026
2	AMEY	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	10001+	6,667 contacts →
	Strong evidence “Who we are: Amey is a global, integrated infrastructure consultancy and operations partner.” Source: RevenueBase Database · checked Sep 28, 2026
3	OPTIV	Indirect evidence	Leawood, KS, United StatesHQ checked Sep 28, 2026	1,001-5,000	2,222 contacts →
	Indirect evidence “Optiv is the cyber advisory and solutions leader, delivering strategic and technical expertise to nearly companies across every major industry.” Source: RevenueBase Database · checked Sep 28, 2026
4	Nava Tech For Business	Indirect evidence	Barueri, BrazilHQ checked Sep 28, 2026	1,001-5,000	1,452 contacts →
	Indirect evidence “Atuamos no core de empresas líderes em seus segmentos, onde tecnologia, estratégia e operação se encontram.” Source: RevenueBase Database · checked Sep 28, 2026
5	Site سايت	Indirect evidence	Al Nakheel, Saudi ArabiaHQ checked Sep 28, 2026	501-1,000	1,378 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 28, 2026
6	Guidepoint Security	Partial evidence	Reston, VA, United StatesHQ checked Sep 28, 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 28, 2026
7	Softcell Technologies Global Pvt. LTD	Partial evidence	Mumbai, IndiaHQ checked Sep 28, 2026	501-1,000	763 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 28, 2026
8	A10 Networks, INC	Strong evidence	San Jose, CA, United StatesHQ checked Sep 28, 2026	501-1,000	673 contacts →
	Strong evidence “A10 Networks provides security and infrastructure solutions for on-premises, hybrid cloud, and edge-cloud environments.” Source: RevenueBase Database · checked Sep 28, 2026
9	I-Tracing	Indirect evidence	Courbevoie, FranceHQ checked Sep 28, 2026	1,001-5,000	639 contacts →
	Indirect 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 28, 2026
10	Paramount Computer Systems	Indirect evidence	Dubai, United Arab EmiratesHQ checked Sep 28, 2026	201-500	525 contacts →
	Indirect evidence “Protection is Paramount!” Source: RevenueBase Database · checked Sep 28, 2026
11	Securityhq	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	501-1,000	502 contacts →
	Partial evidence “SecurityHQ, a global cybersecurity company pioneering Security Performance Engineering for stronger operational performance and resilience.” Source: RevenueBase Database · checked Sep 28, 2026
12	Sure Global Technology	Indirect evidence	Riaydh, Saudi ArabiaHQ checked Sep 28, 2026	201-500	477 contacts →
	Indirect evidence “SURE Global Technology is considered as one of the leading Saudi IT companies.” Source: RevenueBase Database · checked Sep 28, 2026
13	SIRT	Indirect evidence	Barcelona, SpainHQ checked Sep 28, 2026	201-500	449 contacts →
	Indirect evidence “Experiencia, especialización y calidad de servicio son los tres valores clave en los que SIRT basa su actividad y la relación con sus clientes.” Source: RevenueBase Database · checked Sep 28, 2026
14	Fourth Dimension Technologies	Partial evidence	Chennai, IndiaHQ checked Sep 28, 2026	501-1,000	413 contacts →
	Partial evidence “About Us 36+ Years of IT Infrastructure & Managed Services Expertise At Fourth Dimension Technologies (4DTech), we help organizations modernize, secure, and manage their IT…” Source: RevenueBase Database · checked Sep 28, 2026
15	Acpl Systems	Partial evidence	Gurgaon, IndiaHQ checked Sep 28, 2026	201-500	398 contacts →
	Partial evidence “ACPL Systems is a pure-play cybersecurity services company focused on helping organisations translate security investments into measurable outcomes.” Source: RevenueBase Database · checked Sep 28, 2026
16	Metsys	Partial evidence	Boulogne-billancourt, FranceHQ checked Sep 28, 2026	501-1,000	397 contacts →
	Partial evidence “Metsys est un intégrateur de solutions de cybersécurité, d’infrastructure et de cloud.” Source: RevenueBase Database · checked Sep 28, 2026
17	PT Itsec Asia TBK	Indirect evidence	Jakarta, IndonesiaHQ checked Sep 28, 2026	201-500	388 contacts →
	Indirect evidence “ITSEC Asia is a leading cybersecurity company in Indonesia, listed on the Indonesian Stock Exchange (“CYBR”), with over 400 employees across five countries.” Source: RevenueBase Database · checked Sep 28, 2026
18	PCSS	Partial evidence	SingaporeHQ checked Sep 28, 2026	501-1,000	387 contacts →
	Partial evidence “PCSS is a Singapore-based systems integrator with more than 25 years of experience and accolades in providing secure, reliable and state-of-the-art security solutions.” Source: RevenueBase Database · checked Sep 28, 2026
19	Esec Forte Technologies	Partial evidence	Gurugram, IndiaHQ checked Sep 28, 2026	201-500	363 contacts →
	Partial 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 28, 2026
20	Synetis	Strong evidence	Paris, FranceHQ checked Sep 28, 2026	201-500	359 contacts →
	Strong evidence “Founded in 2010, Synetis is the leading independent French consultancy firm specialising in information systems security (ISS).” Source: RevenueBase Database · checked Sep 28, 2026
21	Techdefence	Indirect evidence	Ahmedabad, IndiaHQ checked Sep 28, 2026	201-500	340 contacts →
	Indirect evidence “TechDefence Labs (TechD Cybersecurity Limited) Award-winning \| Innovative \| Visionary We empower organizations across the globe to secure their applications, networks, and digital…” Source: RevenueBase Database · checked Sep 28, 2026
22	Talakunchi Networks PVT LTD	Indirect evidence	Mumbai, IndiaHQ checked Sep 28, 2026	201-500	335 contacts →
	Indirect evidence “T A L A K U N C H I Networks Pvt.” Source: RevenueBase Database · checked Sep 28, 2026
23	IANS	Partial evidence	Boston, MA, United StatesHQ checked Sep 28, 2026	51-200	327 contacts →
	Partial evidence “For the security practitioner caught between rapidly evolving threats and demanding executives, IANS Research is a clear-headed resource for decision-making and articulating risk.” Source: RevenueBase Database · checked Sep 28, 2026
24	Total Information Management Corporation	Indirect evidence	Makati City, PhilippinesHQ checked Sep 28, 2026	201-500	323 contacts →
	Indirect evidence “Total Information Management (TIM) Corporation is a milestone technology services company setting the standards today for highly-reliable and intelligent I.T.” Source: RevenueBase Database · checked Sep 28, 2026
25	CTI	Indirect evidence	Timonium, MD, United StatesHQ checked Sep 28, 2026	n/a	323 contacts →
	Indirect evidence “Continental Technologies Inc (CTI) configures, distributes, designs and maintains technology solutions for customers around the globe and remains both privately-held and locally…” Source: RevenueBase Database · checked Sep 28, 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: infrastructure security consultants. 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 infrastructure security consultants.
Partial evidence: Its own public description names part of infrastructure security consultants, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name infrastructure security consultants. 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 13,068 infrastructure security consultants worldwide

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Infrastructure security consultants worldwide at a glance

As of Sep 28, 2026

25.5%Verified-email coverage

11.2Average contacts per company

1-10Median size (employees)

1.7%Largest-city concentration · London

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

7,677

11-50

4,107

51-200

962

201-500

203

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 infrastructure security consultants, 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 infrastructure security consultants are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “infrastructure security consultants”. 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 infrastructure security consultants), 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 infrastructure security consultants, 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, 37,194 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 28, 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.

Infrastructure security consultants by location

89 lists · largest first

Every Infrastructure security 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 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 infrastructure security consultants, 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 infrastructure security consultants are there worldwide?

RevenueBase identified 13,068 infrastructure security consultants 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?

Private Sector, headquartered in Worldwide, tops this list with the largest team on record.

Which country has the most infrastructure security consultants?

The United States leads with 2,802 companies, followed by India (800) and the United Kingdom (680). Every infrastructure security consultants list by country and city is linked on this page.

Which city has the most infrastructure security consultants?

London leads with 216 headquartered companies, followed by Sao Paulo (161) and Paris (140).

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 37,194 verified decision-maker contacts tracked across these 13,068 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 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 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.