Company lists · Data refreshed September 2026
Top 25 Information security consultants worldwide
RevenueBase identified 21,783 information security consultants worldwide as of September 2026 and tracks 242,627 professional contacts across them, including 78,153 with verified work emails and 33,204 with mobile numbers. The United States is the largest market and London the largest hub.
This list covers information 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 3, 2026. Country and city lists for information 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.
The 25 largest information security consultants worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 3,706 contacts → | ||||
Indirect evidence “Orange Cyberdefense is the expert cybersecurity business unit of the Orange Group.” Source: RevenueBase Database · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 2 | 2,871 contacts → | ||||
Indirect evidence “We align our goals with our clients’ goals – a true partnership that ensures shared success.” Source: RevenueBase Database · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 3 | 2,206 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 3, 2026Thanks. The Data Team will review it. | |||||
| 4 | 1,613 contacts → | ||||
Indirect evidence “Uncovering a world of opportunity together.” Source: RevenueBase Database · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 5 | 1,468 contacts → | ||||
Indirect evidence “Atuamos no core de empresas líderes em seus segmentos, onde tecnologia, estratégia e operação se encontram.” Source: RevenueBase Database · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 6 | 1,429 contacts → | ||||
Indirect evidence “Airbus Protect is an Airbus subsidiary bringing together expertise in cybersecurity, safety and sustainability-related services.” Source: RevenueBase Database · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 7 | 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 3, 2026Thanks. The Data Team will review it. | |||||
| 8 | 1,252 contacts → | ||||
Indirect evidence “Thales is a global leader in cybersecurity, helping the most trusted organizations in the world protect their most critical applications, data, and identities anywhere at scale.” Source: RevenueBase Database · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 9 | 1,234 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 3, 2026Thanks. The Data Team will review it. | |||||
| 10 | 1,107 contacts → | ||||
Indirect evidence “Committed to delivering tailored solutions and unmatched experiences, Centric Consulting is an international business and technology consulting firm that combines the benefits of…” Source: RevenueBase Database · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 11 | 981 contacts → | ||||
Indirect evidence “PPC is now part of DSA” Source: RevenueBase Database · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 12 | 960 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 3, 2026Thanks. The Data Team will review it. | |||||
| 13 | 928 contacts → | ||||
Indirect evidence “At BCG Platinion, we leverage our expertise alongside the unique experiences of our teams to accelerate digital transformations for our clients.” Source: RevenueBase Database · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 14 | 888 contacts → | ||||
Indirect evidence “Ensign InfoSecurity is the largest pure-play end-to-end cybersecurity service provider in Asia.” Source: RevenueBase Database · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 15 | 842 contacts → | ||||
Indirect evidence “Today’s threatscape is relentless.” Source: RevenueBase Database · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 16 | 804 contacts → | ||||
Indirect evidence “The growing threat of cyber risks, the expansion of cloud computing and the emergence of the DevOps movement are reshaping IT practices, enlighting the relevance of our vision for…” Source: RevenueBase Database · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 17 | 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 3, 2026Thanks. The Data Team will review it. | |||||
| 18 | 762 contacts → | ||||
Partial evidence “MTI provides award-winning, end-to-end technology solutions and services in cyber security and data centre for over 35 years.” Source: RevenueBase Database · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 19 | 739 contacts → | ||||
Partial evidence “SISA is a global forensics-driven cybersecurity solutions company, trusted by leading organizations for securing their businesses with robust preventive, detective, and corrective…” Source: RevenueBase Database · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 20 | 736 contacts → | ||||
Indirect evidence “A consulting firm providing technology solutions and advisory services to both private and public sector organizations.” Source: RevenueBase Database · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 21 | 698 contacts → | ||||
Strong evidence “Get a free, powerful security assessment with personalised recommendations, the same analysis that costs from IT Consultancies.” Source: RevenueBase Database · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 22 | 661 contacts → | ||||
Indirect evidence “With more than 30 years of experience partnering with global enterprises on complex business and IT initiatives, SDG is a trusted provider of advisory, transformation, and managed…” Source: RevenueBase Database · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 23 | 643 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 3, 2026Thanks. The Data Team will review it. | |||||
| 24 | 636 contacts → | ||||
Strong evidence “Telos empowers and protects the world’s most security-conscious organizations with solutions for continuous security assurance of individuals, systems, and information.” Source: RevenueBase Database · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 25 | 634 contacts → | ||||
Partial evidence “Help AG, the cybersecurity arm of e & company, provides leading enterprise businesses and governments across the Middle East with strategic consultancy combined with tailored…” Source: RevenueBase Database · checked Sep 3, 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: information 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 information security consultants.
- Partial evidence
- Its own public description names part of information security consultants, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name information 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 21,783 information security consultants worldwide
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Information security consultants worldwide at a glance
As of Sep 3, 2026Companies by employee count
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 information 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
- 61 countries, largest first: the United States, the United Kingdom, India, Brazil, France, Germany, Australia, Canada, the Netherlands, Italy and 51 more. Country and city lists for information security consultants are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “information 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 information 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 information 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, 78,153 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 between September 3, 2026 and September 14, 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.
Information security consultants by location
160 lists · largest firstEvery Information security consultants list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Information security consultants based in the United States6,815
- Information security consultants based in the United Kingdom1,794
- Information security consultants based in India1,315
- Information security consultants based in Brazil1,065
- Information security consultants based in France1,060
- Information security consultants based in Germany971
- Information security consultants based in Australia947
- Information security consultants based in Canada893
- Information security consultants based in the Netherlands560
- Information security consultants based in Italy512
- Information security consultants based in Spain479
- Information security consultants based in Mexico377
- Information security consultants based in South Africa305
- Information security consultants based in Switzerland292
- Information security consultants based in the United Arab Emirates285
- Information security consultants based in Belgium263
- Information security consultants based in Sweden239
- Information security consultants based in Israel218
- Information security consultants based in Poland204
- Information security consultants based in Türkiye196
- Information security consultants based in Argentina179
- Information security consultants based in Colombia147
- Information security consultants based in Chile142
- Information security consultants based in Denmark122
- Information security consultants based in Pakistan122
- Information security consultants based in New Zealand118
- Information security consultants based in Austria117
- Information security consultants based in Saudi Arabia115
- Information security consultants based in Nigeria111
- Information security consultants based in Indonesia108
- Information security consultants based in Singapore107
- Information security consultants based in Portugal99
- Information security consultants based in Romania99
- Information security consultants based in Ireland89
- Information security consultants based in Greece84
- Information security consultants based in Czechia81
- Information security consultants based in Finland73
- Information security consultants based in Malaysia73
- Information security consultants based in Hungary65
- Information security consultants based in Morocco65
- Information security consultants based in Kenya63
- Information security consultants based in Peru59
- Information security consultants based in Egypt56
- Information security consultants based in Norway56
- Information security consultants based in Ecuador51
- Information security consultants based in Luxembourg51
- Information security consultants based in Ukraine50
- Information security consultants based in Russia48
- Information security consultants based in Estonia44
- Information security consultants based in Bulgaria39
- Information security consultants based in the Philippines38
- Information security consultants based in Cyprus37
- Information security consultants based in Thailand37
- Information security consultants based in Japan36
- Information security consultants based in Qatar33
- Information security consultants based in Croatia32
- Information security consultants based in Jordan32
- Information security consultants based in Slovakia32
- Information security consultants based in Hong Kong31
- Information security consultants based in Tunisia27
- Information security consultants based in the Dominican Republic25
Cities
- Information security consultants based in London, United Kingdom515
- Information security consultants based in Paris, France228
- Information security consultants based in Sao Paulo, Brazil219
- Information security consultants based in Toronto, Canada157
- Information security consultants based in Sydney, Australia153
- Information security consultants based in New York, United States131
- Information security consultants based in Melbourne, Australia129
- Information security consultants based in Hyderabad, India99
- Information security consultants based in Pune, India98
- Information security consultants based in Bangalore, India96
- Information security consultants based in Atlanta, United States94
- Information security consultants based in Washington, United States93
- Information security consultants based in Madrid, Spain92
- Information security consultants based in Stockholm, Sweden92
- Information security consultants based in Mumbai, India91
- Information security consultants based in Houston, United States88
- Information security consultants based in Austin, United States82
- Information security consultants based in Dallas, United States74
- Information security consultants based in Chennai, India73
- Information security consultants based in Chicago, United States71
- Information security consultants based in New Delhi, India71
- Information security consultants based in Montreal, Canada68
- Information security consultants based in Tampa, United States67
- Information security consultants based in Bengaluru, India66
- Information security consultants based in Johannesburg, South Africa66
- Information security consultants based in Noida, India65
- Information security consultants based in Ciudad De Mexico, Mexico64
- Information security consultants based in Miami, United States64
- Information security consultants based in San Francisco, United States62
- Information security consultants based in Ahmedabad, India59
- Information security consultants based in Calgary, Canada58
- Information security consultants based in Berlin, Germany56
- Information security consultants based in Brisbane, Australia56
- Information security consultants based in Los Angeles, United States55
- Information security consultants based in Ottawa, Canada53
- Information security consultants based in Barcelona, Spain52
- Information security consultants based in San Diego, United States49
- Information security consultants based in Charlotte, United States48
- Information security consultants based in Tel Aviv, Israel48
- Information security consultants based in Warszawa, Poland47
- Information security consultants based in Arlington, United States46
- Information security consultants based in Manchester, United Kingdom46
- Information security consultants based in Rio De Janeiro, Brazil46
- Information security consultants based in Denver, United States45
- Information security consultants based in Vancouver, Canada45
- Information security consultants based in Boston, United States43
- Information security consultants based in Canberra, Australia42
- Information security consultants based in Amsterdam, Netherlands41
- Information security consultants based in Roma, Italy41
- Information security consultants based in Rome, Italy40
- Information security consultants based in Zurich, Switzerland39
- Information security consultants based in Portland, United States38
- Information security consultants based in Seattle, United States38
- Information security consultants based in Curitiba, Brazil37
- Information security consultants based in Phoenix, United States37
- Information security consultants based in Auckland, New Zealand36
- Information security consultants based in San Antonio, United States36
- Information security consultants based in Gurgaon, India35
- Information security consultants based in Raleigh, United States35
- Information security consultants based in Bucharest, Romania34
- Information security consultants based in Las Vegas, United States34
- Information security consultants based in Milano, Italy34
- Information security consultants based in Cape Town, South Africa32
- Information security consultants based in Orlando, United States32
- Information security consultants based in Wellington, New Zealand32
- Information security consultants based in Alexandria, United States31
- Information security consultants based in Belo Horizonte, Brazil31
- Information security consultants based in Columbia, United States31
- Information security consultants based in Munchen, Germany31
- Information security consultants based in Brasilia, Brazil30
- Information security consultants based in Columbus, United States30
- Information security consultants based in Scottsdale, United States30
- Information security consultants based in Adelaide, Australia29
- Information security consultants based in Herndon, United States29
- Information security consultants based in Koln, Germany29
- Information security consultants based in Lyon, France29
- Information security consultants based in Nashville, United States29
- Information security consultants based in Richmond, United States29
- Information security consultants based in Gurugram, India28
- Information security consultants based in Hamburg, Germany28
- Information security consultants based in Huntsville, United States28
- Information security consultants based in Mclean, United States28
- Information security consultants based in Porto Alegre, Brazil28
- Information security consultants based in Reston, United States28
- Information security consultants based in Wilmington, United States28
- Information security consultants based in Fairfax, United States27
- Information security consultants based in Milan, Italy27
- Information security consultants based in Minneapolis, United States27
- Information security consultants based in Philadelphia, United States27
- Information security consultants based in Plano, United States27
- Information security consultants based in Tallinn, Estonia27
- Information security consultants based in Indianapolis, United States26
- Information security consultants based in Monterrey, Mexico26
- Information security consultants based in Pittsburgh, United States26
- Information security consultants based in Wien, Austria26
- Information security consultants based in Ashburn, United States25
- Information security consultants based in Baltimore, United States25
- Information security consultants based in Birmingham, United Kingdom25
- Information security consultants based in Munich, Germany25
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 information 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 information security consultants are there worldwide?
RevenueBase identified 21,783 information 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?
Orange Cyberdefense, headquartered in Worldwide, tops this list with the largest team on record.
Which country has the most information security consultants?
The United States leads with 6,815 companies, followed by the United Kingdom (1,794) and India (1,315). Every information security consultants list by country and city is linked on this page.
Which city has the most information security consultants?
London leads with 688 headquartered companies, followed by Sao Paulo (350) and Paris (298).
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 78,153 verified decision-maker contacts tracked across these 21,783 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled from the company graph between September 3, 2026 and September 14, 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.