Company lists · Data refreshed September 2026
Top 25 Chief information security officer consultants worldwide
RevenueBase identified 13,834 chief information security officer consultants worldwide as of September 2026 and tracks 141,085 professional contacts across them, including 41,813 with verified work emails. The United States is the largest market and London the largest hub.
This list covers chief information security officer 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 27, 2026. Country and city lists for chief information security officer 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.
The 25 largest chief information security officer consultants worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 12,771 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 2 | 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 27, 2026Thanks. The Data Team will review it. | |||||
| 3 | 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 27, 2026Thanks. The Data Team will review it. | |||||
| 4 | 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, 2026Thanks. The Data Team will review it. | |||||
| 5 | 947 contacts → | ||||
Indirect 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, 2026Thanks. The Data Team will review it. | |||||
| 6 | 641 contacts → | ||||
Partial 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, 2026Thanks. The Data Team will review it. | |||||
| 7 | 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 27, 2026Thanks. The Data Team will review it. | |||||
| 8 | 629 contacts → | ||||
Partial evidence “Telos Corporation (NASDAQ: TLS) empowers and protects the world’s most security-conscious organizations with efficient, adaptable, and secure solutions that safeguard people…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 9 | 628 contacts → | ||||
Indirect evidence “VikingCloud delivers battle-tested cybersecurity and compliance solutions that simply work.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 10 | 619 contacts → | ||||
Indirect evidence “Omegapoint hjälper dig att utveckla och cybersäkra din digitala verksamhet.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 11 | 525 contacts → | ||||
Indirect evidence “Protection is Paramount!” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 12 | 523 contacts → | ||||
Partial evidence “UltraViolet Cyber is the only security operations partner that unifies red, blue, and purple team capabilities into one integrated program, finding what's vulnerable, stopping…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 13 | 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, 2026Thanks. The Data Team will review it. | |||||
| 14 | 502 contacts → | ||||
Partial evidence “SecurityHQ, a global cybersecurity company pioneering Security Performance Engineering for stronger operational performance and resilience.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 15 | 484 contacts → | ||||
Indirect 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, 2026Thanks. The Data Team will review it. | |||||
| 16 | 473 contacts → | ||||
Indirect evidence “At Aujas Cybersecurity, we specialize in building and transforming cybersecurity postures to help businesses effectively mitigate risks.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 17 | 441 contacts → | ||||
Strong evidence “Palo Alto Networks Unit 42 brings together world-renowned threat researchers with an elite team of incident responders and security consultants to create an intelligence-driven…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 18 | 426 contacts → | ||||
Indirect evidence “Somos Secure Soft, el Centro de Excelencia en Ciberseguridad de la empresa Gtd, con más de 20 años de experiencia y presencia en Perú, Chile, Colombia, Ecuador y México.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 19 | 410 contacts → | ||||
Indirect evidence “Edgewater Federal Solutions was founded in 2002 with the mission of being the best IT consulting company possible for our government clients, our contracting partners and our…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 20 | 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, 2026Thanks. The Data Team will review it. | |||||
| 21 | 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 27, 2026Thanks. The Data Team will review it. | |||||
| 22 | 386 contacts → | ||||
Indirect evidence “Progress is our motivation because we are convinced that it will lead us to a successful future – independent of industries, companies and social classes.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 23 | 382 contacts → | ||||
Indirect evidence “NEVERHACK is a French group specialized in cybersecurity for over 40 years.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 24 | 365 contacts → | ||||
Indirect 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, 2026Thanks. The Data Team will review it. | |||||
| 25 | 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 27, 2026Thanks. The Data Team will review it. | |||||
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: chief information security officer 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 chief information security officer consultants.
- Partial evidence
- Its own public description names part of chief information security officer consultants, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name chief information security officer 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 13,834 chief information security officer consultants worldwide
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Chief information security officer consultants worldwide at a glance
As of Sep 27, 2026Companies by employee count
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 chief information security officer 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 chief information security officer consultants are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “chief information security officer 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 chief information security officer 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 chief information security officer 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, 41,813 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.
Chief information security officer consultants by location
84 lists · largest firstEvery Chief information security officer consultants list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Chief information security officer consultants based in the United States3,839
- Chief information security officer consultants based in the United Kingdom944
- Chief information security officer consultants based in India841
- Chief information security officer consultants based in France513
- Chief information security officer consultants based in Canada500
- Chief information security officer consultants based in Australia475
- Chief information security officer consultants based in Germany401
- Chief information security officer consultants based in Brazil363
- Chief information security officer consultants based in the Netherlands267
- Chief information security officer consultants based in Spain190
- Chief information security officer consultants based in the United Arab Emirates182
- Chief information security officer consultants based in Italy157
- Chief information security officer consultants based in Mexico156
- Chief information security officer consultants based in Switzerland144
- Chief information security officer consultants based in Israel139
- Chief information security officer consultants based in South Africa127
- Chief information security officer consultants based in Sweden127
- Chief information security officer consultants based in Belgium114
- Chief information security officer consultants based in Türkiye101
- Chief information security officer consultants based in Chile95
- Chief information security officer consultants based in Colombia88
- Chief information security officer consultants based in Poland86
- Chief information security officer consultants based in Singapore82
- Chief information security officer consultants based in Argentina70
- Chief information security officer consultants based in Indonesia68
- Chief information security officer consultants based in Saudi Arabia67
- Chief information security officer consultants based in Nigeria61
- Chief information security officer consultants based in New Zealand58
- Chief information security officer consultants based in Denmark55
- Chief information security officer consultants based in Austria53
- Chief information security officer consultants based in Ireland51
- Chief information security officer consultants based in Romania45
- Chief information security officer consultants based in Malaysia41
- Chief information security officer consultants based in Finland39
- Chief information security officer consultants based in Portugal39
- Chief information security officer consultants based in Ecuador36
- Chief information security officer consultants based in Peru32
- Chief information security officer consultants based in Hungary31
- Chief information security officer consultants based in Greece30
- Chief information security officer consultants based in Egypt28
- Chief information security officer consultants based in Bulgaria25
- Chief information security officer consultants based in Ukraine25
Cities
- Chief information security officer consultants based in Toronto, Canada123
- Chief information security officer consultants based in Sydney, Australia111
- Chief information security officer consultants based in New York, United States101
- Chief information security officer consultants based in Melbourne, Australia100
- Chief information security officer consultants based in Atlanta, United States84
- Chief information security officer consultants based in Washington, United States83
- Chief information security officer consultants based in Houston, United States70
- Chief information security officer consultants based in Pune, India65
- Chief information security officer consultants based in Austin, United States64
- Chief information security officer consultants based in Bangalore, India64
- Chief information security officer consultants based in Tampa, United States64
- Chief information security officer consultants based in Hyderabad, India61
- Chief information security officer consultants based in San Francisco, United States61
- Chief information security officer consultants based in Dallas, United States59
- Chief information security officer consultants based in Mumbai, India56
- Chief information security officer consultants based in Chennai, India55
- Chief information security officer consultants based in Montreal, Canada55
- Chief information security officer consultants based in Chicago, United States54
- Chief information security officer consultants based in Bengaluru, India51
- Chief information security officer consultants based in Calgary, Canada50
- Chief information security officer consultants based in Miami, United States48
- Chief information security officer consultants based in Los Angeles, United States45
- Chief information security officer consultants based in San Diego, United States45
- Chief information security officer consultants based in Ottawa, Canada44
- Chief information security officer consultants based in New Delhi, India41
- Chief information security officer consultants based in Arlington, United States39
- Chief information security officer consultants based in Noida, India39
- Chief information security officer consultants based in Brisbane, Australia38
- Chief information security officer consultants based in Boston, United States37
- Chief information security officer consultants based in Charlotte, United States34
- Chief information security officer consultants based in Seattle, United States34
- Chief information security officer consultants based in Ahmedabad, India33
- Chief information security officer consultants based in Denver, United States33
- Chief information security officer consultants based in Vancouver, Canada31
- Chief information security officer consultants based in Alexandria, United States30
- Chief information security officer consultants based in Raleigh, United States30
- Chief information security officer consultants based in Canberra, Australia29
- Chief information security officer consultants based in Phoenix, United States28
- Chief information security officer consultants based in San Antonio, United States28
- Chief information security officer consultants based in Ashburn, United States27
- Chief information security officer consultants based in Las Vegas, United States27
- Chief information security officer consultants based in Minneapolis, United States26
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 chief information security officer 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 chief information security officer consultants are there worldwide?
RevenueBase identified 13,834 chief information security officer 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 chief information security officer consultants?
The United States leads with 3,839 companies, followed by the United Kingdom (944) and India (841). Every chief information security officer consultants list by country and city is linked on this page.
Which city has the most chief information security officer consultants?
London leads with 367 headquartered companies, followed by Paris (170) and Sao Paulo (138).
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 41,813 verified decision-maker contacts tracked across these 13,834 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.