Company lists · Data refreshed September 2026
Top 25 Security engineering firms worldwide
RevenueBase identified 13,164 security engineering firms worldwide as of September 2026 and tracks 160,932 professional contacts across them, including 42,498 with verified work emails. The United States is the largest market and London the largest hub.
This list covers security engineering firms 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 29, 2026. Country and city lists for security engineering firms 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 engineering firms worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 12,771 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 2 | 5,707 contacts → | ||||
Indirect evidence “Convergint is a global systems integrator focused on delivering results for our customers through unparalleled service excellence.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 3 | 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 29, 2026Thanks. The Data Team will review it. | |||||
| 4 | 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 29, 2026Thanks. The Data Team will review it. | |||||
| 5 | 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 29, 2026Thanks. The Data Team will review it. | |||||
| 6 | 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 29, 2026Thanks. The Data Team will review it. | |||||
| 7 | 1,041 contacts → | ||||
Indirect evidence “A lo largo de 30 años, hemos incursionado y evolucionado en distintas áreas atendiendo en el continente americano a clientes privados, corporativos y sector gobierno.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 8 | 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 29, 2026Thanks. The Data Team will review it. | |||||
| 9 | 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 29, 2026Thanks. The Data Team will review it. | |||||
| 10 | 659 contacts → | ||||
Indirect evidence “comienzos de 1989 se funda SABICO SEGURIDAD S.A, estando inscrita en el Registro de Empresas de Seguridad con el nº 1731.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 11 | 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 29, 2026Thanks. The Data Team will review it. | |||||
| 12 | 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 29, 2026Thanks. The Data Team will review it. | |||||
| 13 | 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 29, 2026Thanks. The Data Team will review it. | |||||
| 14 | 525 contacts → | ||||
Indirect evidence “Protection is Paramount!” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 15 | 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 29, 2026Thanks. The Data Team will review it. | |||||
| 16 | 502 contacts → | ||||
Strong evidence “SecurityHQ, a global cybersecurity company pioneering Security Performance Engineering for stronger operational performance and resilience.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 17 | 477 contacts → | ||||
Indirect evidence “SURE Global Technology is considered as one of the leading Saudi IT companies.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 18 | 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 29, 2026Thanks. The Data Team will review it. | |||||
| 19 | 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 29, 2026Thanks. The Data Team will review it. | |||||
| 20 | 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 29, 2026Thanks. The Data Team will review it. | |||||
| 21 | 392 contacts → | ||||
Partial evidence “Kudelski Security is a premier cybersecurity solutions provider, working with the most security-conscious organizations in Europe and across the United States.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 22 | 374 contacts → | ||||
Strong evidence “At Resillion, we're more than just a global leader in quality engineering, testing, and cyber security – we're your dedicated partner from the start of your project to its…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 23 | 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 29, 2026Thanks. The Data Team will review it. | |||||
| 24 | 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 29, 2026Thanks. The Data Team will review it. | |||||
| 25 | 360 contacts → | ||||
Partial evidence “NSR is an Italian Computer Engineering company with private capital.” Source: RevenueBase Database · checked Sep 29, 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 engineering firms. 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 engineering firms.
- Partial evidence
- Its own public description names part of security engineering firms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name security engineering firms. 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 13,164 security engineering firms worldwide
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Security engineering firms worldwide at a glance
As of Sep 29, 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 engineering firms, 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 engineering firms are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “security engineering firms”. 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 engineering firms), 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 engineering firms, 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, 42,498 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 29, 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 engineering firms by location
93 lists · largest firstEvery Security engineering firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Security engineering firms based in the United States3,199
- Security engineering firms based in India917
- Security engineering firms based in the United Kingdom745
- Security engineering firms based in Brazil486
- Security engineering firms based in France441
- Security engineering firms based in Germany440
- Security engineering firms based in Canada403
- Security engineering firms based in Australia354
- Security engineering firms based in the Netherlands244
- Security engineering firms based in Spain223
- Security engineering firms based in Italy206
- Security engineering firms based in the United Arab Emirates176
- Security engineering firms based in Mexico173
- Security engineering firms based in South Africa137
- Security engineering firms based in Türkiye134
- Security engineering firms based in Switzerland125
- Security engineering firms based in Colombia118
- Security engineering firms based in Belgium116
- Security engineering firms based in Poland115
- Security engineering firms based in Sweden111
- Security engineering firms based in Israel110
- Security engineering firms based in Chile103
- Security engineering firms based in Argentina95
- Security engineering firms based in Pakistan89
- Security engineering firms based in Indonesia67
- Security engineering firms based in Saudi Arabia67
- Security engineering firms based in Singapore66
- Security engineering firms based in Peru63
- Security engineering firms based in Romania55
- Security engineering firms based in Morocco52
- Security engineering firms based in Portugal51
- Security engineering firms based in New Zealand50
- Security engineering firms based in Austria49
- Security engineering firms based in Egypt47
- Security engineering firms based in Malaysia45
- Security engineering firms based in Greece43
- Security engineering firms based in Denmark41
- Security engineering firms based in Hungary41
- Security engineering firms based in Ecuador40
- Security engineering firms based in Kenya38
- Security engineering firms based in Ukraine32
- Security engineering firms based in Ireland31
- Security engineering firms based in Qatar28
Cities
- Security engineering firms based in London, United Kingdom237
- Security engineering firms based in Sao Paulo, Brazil152
- Security engineering firms based in Paris, France114
- Security engineering firms based in Bangalore, India113
- Security engineering firms based in Toronto, Canada106
- Security engineering firms based in Dubai, United Arab Emirates98
- Security engineering firms based in Hyderabad, India73
- Security engineering firms based in New York, United States73
- Security engineering firms based in Melbourne, Australia70
- Security engineering firms based in Pune, India70
- Security engineering firms based in Sydney, Australia70
- Security engineering firms based in Atlanta, United States61
- Security engineering firms based in Singapore, Singapore60
- Security engineering firms based in Houston, United States56
- Security engineering firms based in Washington, United States55
- Security engineering firms based in Mumbai, India54
- Security engineering firms based in Chennai, India53
- Security engineering firms based in Madrid, Spain52
- Security engineering firms based in New Delhi, India52
- Security engineering firms based in San Francisco, United States52
- Security engineering firms based in Miami, United States49
- Security engineering firms based in Austin, United States47
- Security engineering firms based in Stockholm, Sweden47
- Security engineering firms based in Noida, India42
- Security engineering firms based in Ahmedabad, India40
- Security engineering firms based in Chicago, United States40
- Security engineering firms based in Los Angeles, United States39
- Security engineering firms based in Ottawa, Canada39
- Security engineering firms based in Riyadh, Saudi Arabia39
- Security engineering firms based in Tampa, United States39
- Security engineering firms based in Bogota, Colombia37
- Security engineering firms based in Columbia, United States36
- Security engineering firms based in Dallas, United States36
- Security engineering firms based in Rio De Janeiro, Brazil36
- Security engineering firms based in Berlin, Germany34
- Security engineering firms based in Johannesburg, South Africa34
- Security engineering firms based in Nairobi, Kenya34
- Security engineering firms based in San Diego, United States33
- Security engineering firms based in Tel Aviv, Israel32
- Security engineering firms based in Belo Horizonte, Brazil31
- Security engineering firms based in Calgary, Canada31
- Security engineering firms based in Denver, United States30
- Security engineering firms based in Barcelona, Spain29
- Security engineering firms based in Alexandria, United States28
- Security engineering firms based in San Antonio, United States28
- Security engineering firms based in Arlington, United States27
- Security engineering firms based in Warsaw, Poland27
- Security engineering firms based in Delhi, India26
- Security engineering firms based in Amsterdam, Netherlands25
- Security engineering firms based in Canberra, Australia25
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 engineering firms, 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 engineering firms are there worldwide?
RevenueBase identified 13,164 security engineering firms 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 security engineering firms?
The United States leads with 3,199 companies, followed by India (917) and the United Kingdom (745). Every security engineering firms list by country and city is linked on this page.
Which city has the most security engineering firms?
London leads with 240 headquartered companies, followed by Sao Paulo (152) and Paris (115).
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 42,498 verified decision-maker contacts tracked across these 13,164 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 29, 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.