Company lists · Data refreshed September 2026
Top 25 Data security consultancies worldwide
RevenueBase identified 26,496 data security consultancies worldwide as of September 2026 and tracks 293,307 professional contacts across them, including 76,498 with verified work emails. The United States is the largest market and London the largest hub.
This list covers data security consultancies 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 21, 2026. Country and city lists for data security consultancies 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 data security consultancies worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 12,771 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 21, 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 21, 2026Thanks. The Data Team will review it. | |||||
| 3 | 1,592 contacts → | ||||
Indirect evidence “Uncovering a world of opportunity together.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 4 | 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 21, 2026Thanks. The Data Team will review it. | |||||
| 5 | 1,431 contacts → | ||||
Indirect evidence “Airbus Protect is an Airbus subsidiary bringing together expertise in cybersecurity, safety and sustainability-related services.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 6 | 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 21, 2026Thanks. The Data Team will review it. | |||||
| 7 | 1,374 contacts → | ||||
Partial evidence “First Security Group LLC was founded in 2004 with the vision of His Highness, the Vice President, Prime Minister, and Ruler of Dubai, Sheikh Mohamed bin Rashid Al Maktoum.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 8 | 1,345 contacts → | ||||
Indirect evidence “Trace3 delivers business transformation.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 9 | 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 21, 2026Thanks. The Data Team will review it. | |||||
| 10 | 1,113 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 21, 2026Thanks. The Data Team will review it. | |||||
| 11 | 1,050 contacts → | ||||
Partial evidence “Brosnan Risk Consultants, Ltd.(BRC) is a security risk management firm focusing on physical security, emergency security, disaster preparedness and recovery and management…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 12 | 1,037 contacts → | ||||
Indirect evidence “Synoptek is a leading global managed services provider and technology consulting firm that delivers transformative business results.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 13 | 1,029 contacts → | ||||
Indirect evidence “Guidehouse is a leading global provider of consulting services to the public and commercial markets with broad capabilities in management, technology, and risk consulting.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 14 | 1,007 contacts → | ||||
Indirect evidence “La proposition de valeur d'Onet dans la sécurité se fonde sur - son expertise sécurité et sa capacité à analyser les besoins et risques propres à ses clients- sa parfaite maîtrise…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 15 | 979 contacts → | ||||
Indirect evidence “PPC is now part of DSA” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 16 | 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 21, 2026Thanks. The Data Team will review it. | |||||
| 17 | 874 contacts → | ||||
Indirect evidence “Trustwave, a LevelBlue Company, is a globally recognized cybersecurity leader that reduces cyber risk and fortifies organizations against disruptive and damaging cyber threats.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 18 | 844 contacts → | ||||
Indirect evidence “Today’s threatscape is relentless.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 19 | 771 contacts → | ||||
Partial evidence “Since 2006, PSU has been the leading Scandinavian risk and security consultancy in China.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 20 | 764 contacts → | ||||
Strong 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 21, 2026Thanks. The Data Team will review it. | |||||
| 21 | 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 21, 2026Thanks. The Data Team will review it. | |||||
| 22 | 742 contacts → | ||||
Indirect evidence “A consulting firm providing technology solutions and advisory services to both private and public sector organizations.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 23 | 705 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 21, 2026Thanks. The Data Team will review it. | |||||
| 24 | 660 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 21, 2026Thanks. The Data Team will review it. | |||||
| 25 | 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 21, 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: data security consultancies. 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 data security consultancies.
- Partial evidence
- Its own public description names part of data security consultancies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name data security consultancies. 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 26,496 data security consultancies worldwide
See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 76,498 reachable decision-makers.
Free signup · no credit card
Data security consultancies worldwide at a glance
As of Sep 21, 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 data security consultancies, 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 data security consultancies are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “data security consultancies”. 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 data security consultancies), 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 data security consultancies, 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, 76,498 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 21, 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.
Data security consultancies by location
143 lists · largest firstEvery Data security consultancies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Data security consultancies based in the United States6,049
- Data security consultancies based in the United Kingdom1,686
- Data security consultancies based in India1,547
- Data security consultancies based in Germany1,164
- Data security consultancies based in Brazil1,103
- Data security consultancies based in France1,047
- Data security consultancies based in Canada819
- Data security consultancies based in Australia798
- Data security consultancies based in the Netherlands556
- Data security consultancies based in Spain541
- Data security consultancies based in Italy523
- Data security consultancies based in Mexico340
- Data security consultancies based in the United Arab Emirates340
- Data security consultancies based in Switzerland306
- Data security consultancies based in South Africa271
- Data security consultancies based in Türkiye263
- Data security consultancies based in Belgium238
- Data security consultancies based in Sweden228
- Data security consultancies based in Poland227
- Data security consultancies based in Colombia199
- Data security consultancies based in Israel195
- Data security consultancies based in Chile183
- Data security consultancies based in Argentina179
- Data security consultancies based in Nigeria149
- Data security consultancies based in Pakistan149
- Data security consultancies based in Saudi Arabia131
- Data security consultancies based in Singapore124
- Data security consultancies based in Indonesia119
- Data security consultancies based in Austria118
- Data security consultancies based in Denmark114
- Data security consultancies based in Portugal103
- Data security consultancies based in Ireland100
- Data security consultancies based in New Zealand97
- Data security consultancies based in Romania96
- Data security consultancies based in Peru90
- Data security consultancies based in Kenya85
- Data security consultancies based in Malaysia81
- Data security consultancies based in Morocco80
- Data security consultancies based in Greece75
- Data security consultancies based in Ecuador73
- Data security consultancies based in Finland72
- Data security consultancies based in Egypt69
- Data security consultancies based in Hungary67
- Data security consultancies based in Norway58
- Data security consultancies based in Luxembourg52
- Data security consultancies based in Russia49
- Data security consultancies based in the Philippines48
- Data security consultancies based in Japan41
- Data security consultancies based in Thailand41
- Data security consultancies based in Estonia40
- Data security consultancies based in Croatia39
- Data security consultancies based in Bulgaria38
- Data security consultancies based in Tunisia38
- Data security consultancies based in Ukraine38
- Data security consultancies based in Hong Kong37
- Data security consultancies based in Cyprus36
- Data security consultancies based in Slovakia34
- Data security consultancies based in Jordan31
- Data security consultancies based in the Dominican Republic29
- Data security consultancies based in Uruguay26
Cities
- Data security consultancies based in London, United Kingdom625
- Data security consultancies based in Sao Paulo, Brazil346
- Data security consultancies based in Toronto, Canada199
- Data security consultancies based in New York, United States182
- Data security consultancies based in Sydney, Australia174
- Data security consultancies based in Melbourne, Australia159
- Data security consultancies based in Mumbai, India126
- Data security consultancies based in Washington, United States125
- Data security consultancies based in Atlanta, United States121
- Data security consultancies based in Pune, India118
- Data security consultancies based in Hyderabad, India117
- Data security consultancies based in Houston, United States113
- Data security consultancies based in Bangalore, India108
- Data security consultancies based in Dallas, United States100
- Data security consultancies based in Chicago, United States98
- Data security consultancies based in Austin, United States88
- Data security consultancies based in Chennai, India85
- Data security consultancies based in Noida, India83
- Data security consultancies based in Miami, United States81
- Data security consultancies based in New Delhi, India81
- Data security consultancies based in Berlin, Germany79
- Data security consultancies based in Montreal, Canada78
- Data security consultancies based in San Francisco, United States78
- Data security consultancies based in Rio De Janeiro, Brazil77
- Data security consultancies based in Tampa, United States74
- Data security consultancies based in Bengaluru, India73
- Data security consultancies based in Calgary, Canada73
- Data security consultancies based in Los Angeles, United States66
- Data security consultancies based in Ottawa, Canada64
- Data security consultancies based in Brisbane, Australia61
- Data security consultancies based in Denver, United States60
- Data security consultancies based in Charlotte, United States58
- Data security consultancies based in Boston, United States57
- Data security consultancies based in Ahmedabad, India55
- Data security consultancies based in Arlington, United States53
- Data security consultancies based in Roma, Italy53
- Data security consultancies based in San Diego, United States53
- Data security consultancies based in Vancouver, Canada51
- Data security consultancies based in Seattle, United States50
- Data security consultancies based in Hamburg, Germany48
- Data security consultancies based in Manchester, United Kingdom47
- Data security consultancies based in Canberra, Australia43
- Data security consultancies based in San Antonio, United States43
- Data security consultancies based in Belo Horizonte, Brazil42
- Data security consultancies based in Gurgaon, India42
- Data security consultancies based in Gurugram, India42
- Data security consultancies based in Alexandria, United States41
- Data security consultancies based in Curitiba, Brazil41
- Data security consultancies based in Rome, Italy41
- Data security consultancies based in Columbia, United States40
- Data security consultancies based in Las Vegas, United States40
- Data security consultancies based in Phoenix, United States40
- Data security consultancies based in Reston, United States40
- Data security consultancies based in Orlando, United States39
- Data security consultancies based in Perth, Australia39
- Data security consultancies based in Brasilia, Brazil38
- Data security consultancies based in Delhi, India38
- Data security consultancies based in Porto Alegre, Brazil38
- Data security consultancies based in Milano, Italy36
- Data security consultancies based in Raleigh, United States36
- Data security consultancies based in Ashburn, United States34
- Data security consultancies based in Mclean, United States34
- Data security consultancies based in Milan, Italy33
- Data security consultancies based in Minneapolis, United States32
- Data security consultancies based in Portland, United States32
- Data security consultancies based in Munich, Germany31
- Data security consultancies based in Columbus, United States30
- Data security consultancies based in Herndon, United States30
- Data security consultancies based in Mississauga, Canada30
- Data security consultancies based in Birmingham, United Kingdom29
- Data security consultancies based in Plano, United States29
- Data security consultancies based in Philadelphia, United States28
- Data security consultancies based in Richmond, United States28
- Data security consultancies based in Adelaide, Australia27
- Data security consultancies based in San Jose, United States27
- Data security consultancies based in Scottsdale, United States27
- Data security consultancies based in Baltimore, United States26
- Data security consultancies based in Wilmington, United States26
- Data security consultancies based in Barueri, Brazil25
- Data security consultancies based in Frankfurt, Germany25
- Data security consultancies based in Huntsville, United States25
- Data security consultancies based in Leeds, United Kingdom25
- Data security consultancies based in Pittsburgh, United States25
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 data security consultancies, 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 data security consultancies are there worldwide?
RevenueBase identified 26,496 data security consultancies 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 data security consultancies?
The United States leads with 6,049 companies, followed by the United Kingdom (1,686) and India (1,547). Every data security consultancies list by country and city is linked on this page.
Which city has the most data security consultancies?
London leads with 632 headquartered companies, followed by Sao Paulo (346) and Paris (293).
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 76,498 verified decision-maker contacts tracked across these 26,496 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 21, 2026.
Ready to reach these companies? Verified emails and direct dials for all 26,496 data security consultancies worldwide. Start with a free account, no credit card.
Download this list →Related lists
Browse the directory
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.