Company lists · Data refreshed September 2026
Top 25 Security intelligence companies worldwide
RevenueBase identified 21,153 security intelligence companies worldwide as of September 2026 and tracks 436,672 professional contacts across them, including 86,705 with verified work emails. The United States is the largest market and London the largest hub.
This list covers security intelligence 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 21, 2026. Country and city lists for security intelligence 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.
The 25 largest security intelligence companies worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 79,699 contacts → | ||||
Partial evidence “G4S is a leading security and facility services company that provides proactive security services and cutting-edge smart technology to deliver tailored, integrated security…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 2 | 12,771 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 3 | 9,697 contacts → | ||||
Indirect evidence “MANTECH is more than a technology company.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 4 | 4,925 contacts → | ||||
Indirect evidence “Sophos is a cybersecurity leader defending organizations globally with an AI-driven platform and expert-led services.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 5 | 3,673 contacts → | ||||
Indirect evidence “Orange Cyberdefense is the expert cybersecurity business unit of the Orange Group.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 6 | 3,649 contacts → | ||||
Partial evidence “We are a crowdsourced security company that safeguards organizations' assets from sophisticated threat actors before they can strike-by uniting our customers with trusted hackers…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 7 | 3,592 contacts → | ||||
Indirect evidence “U.S.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 8 | 3,447 contacts → | ||||
Strong evidence “Trellix is a global cybersecurity company delivering intelligence-led cyber resilience for security-conscious organizations at any stage of their journey.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 9 | 3,387 contacts → | ||||
Partial evidence “Il Gruppo Sicuritalia, con oltre 18.500 dipendenti, è la più grande azienda italiana ed il secondo player privato europeo in ambito Security.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 10 | 2,947 contacts → | ||||
Partial evidence “Digital Intelligence is home to over 4,500 digital, cyber and intelligence experts across 13 countries.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 11 | 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. | |||||
| 12 | 2,172 contacts → | ||||
Indirect evidence “Bitdefender is a cybersecurity leader delivering best-in-class threat prevention, detection, and response solutions worldwide.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 13 | 2,092 contacts → | ||||
Partial evidence “Systems Planning & Analysis (SPA) is a leading global provider of data-driven analytical insights for critical national security programs.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 14 | 2,025 contacts → | ||||
Indirect evidence “Crisis24, a GardaWorld company, is widely regarded as the leading integrated risk management, crisis response, consulting, and global protective solutions firm, serving the…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 15 | 1,949 contacts → | ||||
Partial evidence “Paragon Systems employs over 10,500 professionals in specialized operations providing security, fire, investigations, inspections, cybersecurity, risk management, and mission…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 16 | 1,773 contacts → | ||||
Indirect evidence “Inspira Enterprise is a global Cybersecurity & Data Analytics & AI services provider with a presence in North America, ASEAN, Middle East, India, and Africa regions.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 17 | 1,508 contacts → | ||||
Strong evidence “We are an intelligence-led security business.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 18 | 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. | |||||
| 19 | 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. | |||||
| 20 | 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. | |||||
| 21 | 1,368 contacts → | ||||
Partial evidence “Securitas es reconocida como una multinacional líder mundial en seguridad.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 22 | 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 21, 2026Thanks. The Data Team will review it. | |||||
| 23 | 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. | |||||
| 24 | 1,081 contacts → | ||||
Partial evidence “Twenty-five years ago Andrews International (AI) began forming a network of the world’s foremost security authorities and connecting with strategic partners for operations…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 25 | 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. | |||||
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: security intelligence 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 security intelligence companies.
- Partial evidence
- Its own public description names part of security intelligence companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name security intelligence 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 21,153 security intelligence companies worldwide
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Security intelligence companies 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 security intelligence 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 security intelligence companies are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “security intelligence 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 security intelligence 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 security intelligence 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, 86,705 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.
Security intelligence companies by location
114 lists · largest firstEvery Security intelligence companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Security intelligence companies based in the United States5,413
- Security intelligence companies based in the United Kingdom1,493
- Security intelligence companies based in India1,385
- Security intelligence companies based in Australia666
- Security intelligence companies based in France661
- Security intelligence companies based in Canada647
- Security intelligence companies based in Brazil590
- Security intelligence companies based in Germany466
- Security intelligence companies based in Italy346
- Security intelligence companies based in Spain342
- Security intelligence companies based in the Netherlands340
- Security intelligence companies based in the United Arab Emirates315
- Security intelligence companies based in Mexico294
- Security intelligence companies based in South Africa260
- Security intelligence companies based in Israel238
- Security intelligence companies based in Türkiye205
- Security intelligence companies based in Colombia187
- Security intelligence companies based in Switzerland179
- Security intelligence companies based in Sweden155
- Security intelligence companies based in Belgium147
- Security intelligence companies based in Chile147
- Security intelligence companies based in Nigeria140
- Security intelligence companies based in Pakistan137
- Security intelligence companies based in Saudi Arabia133
- Security intelligence companies based in Argentina126
- Security intelligence companies based in Poland124
- Security intelligence companies based in Singapore124
- Security intelligence companies based in Indonesia109
- Security intelligence companies based in Peru88
- Security intelligence companies based in Malaysia82
- Security intelligence companies based in Kenya75
- Security intelligence companies based in Austria73
- Security intelligence companies based in New Zealand72
- Security intelligence companies based in Romania72
- Security intelligence companies based in Ireland69
- Security intelligence companies based in Ecuador65
- Security intelligence companies based in Denmark64
- Security intelligence companies based in Egypt60
- Security intelligence companies based in Portugal60
- Security intelligence companies based in Finland58
- Security intelligence companies based in Greece58
- Security intelligence companies based in Morocco55
- Security intelligence companies based in the Philippines54
- Security intelligence companies based in Japan53
- Security intelligence companies based in Ukraine51
- Security intelligence companies based in Hungary41
- Security intelligence companies based in Norway41
- Security intelligence companies based in Bulgaria38
- Security intelligence companies based in Qatar35
- Security intelligence companies based in Thailand35
- Security intelligence companies based in Hong Kong28
- Security intelligence companies based in Estonia27
- Security intelligence companies based in Jordan27
- Security intelligence companies based in Cyprus25
- Security intelligence companies based in Luxembourg25
Cities
- Security intelligence companies based in Sao Paulo, Brazil200
- Security intelligence companies based in New York, United States175
- Security intelligence companies based in Washington, United States151
- Security intelligence companies based in Sydney, Australia140
- Security intelligence companies based in Toronto, Canada139
- Security intelligence companies based in Melbourne, Australia126
- Security intelligence companies based in Hyderabad, India98
- Security intelligence companies based in Pune, India98
- Security intelligence companies based in Mumbai, India97
- Security intelligence companies based in Bangalore, India94
- Security intelligence companies based in Atlanta, United States93
- Security intelligence companies based in New Delhi, India93
- Security intelligence companies based in Houston, United States92
- Security intelligence companies based in Austin, United States83
- Security intelligence companies based in Dallas, United States82
- Security intelligence companies based in Miami, United States82
- Security intelligence companies based in Chennai, India75
- Security intelligence companies based in Chicago, United States71
- Security intelligence companies based in Los Angeles, United States70
- Security intelligence companies based in Ottawa, Canada69
- Security intelligence companies based in Noida, India68
- Security intelligence companies based in Tampa, United States66
- Security intelligence companies based in Arlington, United States64
- Security intelligence companies based in Bengaluru, India64
- Security intelligence companies based in San Francisco, United States63
- Security intelligence companies based in Montreal, Canada62
- Security intelligence companies based in Ahmedabad, India59
- Security intelligence companies based in Columbia, United States57
- Security intelligence companies based in Alexandria, United States55
- Security intelligence companies based in Calgary, Canada54
- Security intelligence companies based in Canberra, Australia53
- Security intelligence companies based in Brisbane, Australia51
- Security intelligence companies based in Reston, United States49
- Security intelligence companies based in Vancouver, Canada48
- Security intelligence companies based in San Diego, United States47
- Security intelligence companies based in Charlotte, United States46
- Security intelligence companies based in Denver, United States46
- Security intelligence companies based in Mclean, United States45
- Security intelligence companies based in Orlando, United States44
- Security intelligence companies based in Rio De Janeiro, Brazil43
- Security intelligence companies based in San Antonio, United States42
- Security intelligence companies based in Herndon, United States41
- Security intelligence companies based in Las Vegas, United States41
- Security intelligence companies based in Boston, United States39
- Security intelligence companies based in Karachi, Pakistan39
- Security intelligence companies based in Ashburn, United States37
- Security intelligence companies based in Gurgaon, India36
- Security intelligence companies based in Phoenix, United States36
- Security intelligence companies based in Seattle, United States36
- Security intelligence companies based in Raleigh, United States35
- Security intelligence companies based in Huntsville, United States34
- Security intelligence companies based in Baltimore, United States33
- Security intelligence companies based in Pittsburgh, United States32
- Security intelligence companies based in Colorado Springs, United States31
- Security intelligence companies based in Gurugram, India31
- Security intelligence companies based in Fairfax, United States29
- Security intelligence companies based in Adelaide, Australia28
- Security intelligence companies based in Wilmington, United States27
- Security intelligence companies based in Plano, 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 security intelligence 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 security intelligence companies are there worldwide?
RevenueBase identified 21,153 security intelligence 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?
G4s, headquartered in London, tops this list with the largest team on record.
Which country has the most security intelligence companies?
The United States leads with 5,413 companies, followed by the United Kingdom (1,493) and India (1,385). Every security intelligence companies list by country and city is linked on this page.
Which city has the most security intelligence companies?
London leads with 602 headquartered companies, followed by Paris (202) and Sao Paulo (200).
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 86,705 verified decision-maker contacts tracked across these 21,153 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.
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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.