Company lists · Data refreshed September 2026
Top 25 Network security assessment firms worldwide
RevenueBase identified 22,693 network security assessment firms worldwide as of September 2026 and tracks 253,388 professional contacts across them, including 75,005 with verified work emails. The United States is the largest market and London the largest hub.
This list covers network security assessment 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 network security assessment 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 network security assessment 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 | 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 29, 2026Thanks. The Data Team will review it. | |||||
| 3 | 3,673 contacts → | ||||
Indirect evidence “Orange Cyberdefense is the expert cybersecurity business unit of the Orange Group.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 4 | 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 29, 2026Thanks. The Data Team will review it. | |||||
| 5 | 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. | |||||
| 6 | 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 29, 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 29, 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 29, 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 29, 2026Thanks. The Data Team will review it. | |||||
| 10 | 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 29, 2026Thanks. The Data Team will review it. | |||||
| 11 | 888 contacts → | ||||
Indirect evidence “Ensign InfoSecurity is the largest pure-play end-to-end cybersecurity service provider in Asia.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 12 | 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 29, 2026Thanks. The Data Team will review it. | |||||
| 13 | 844 contacts → | ||||
Indirect evidence “Today’s threatscape is relentless.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 14 | 813 contacts → | ||||
Partial evidence “The Synack Red Team is a private freelance security research team that spans 6 continents and over 80 countries.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 15 | 764 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 29, 2026Thanks. The Data Team will review it. | |||||
| 16 | 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. | |||||
| 17 | 743 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 29, 2026Thanks. The Data Team will review it. | |||||
| 18 | 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 29, 2026Thanks. The Data Team will review it. | |||||
| 19 | 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 29, 2026Thanks. The Data Team will review it. | |||||
| 20 | 641 contacts → | ||||
Strong 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. | |||||
| 21 | 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. | |||||
| 22 | 636 contacts → | ||||
Indirect evidence “Everfox delivers trusted connectivity to protect the world's most critical environments, safeguarding the sensitive information behind decision advantage.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 23 | 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. | |||||
| 24 | 628 contacts → | ||||
Indirect evidence “VikingCloud delivers battle-tested cybersecurity and compliance solutions that simply work.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 25 | 623 contacts → | ||||
Indirect evidence “secunet – We are the Guardians of Europe's Digital Freedom.” 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: network security assessment 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 network security assessment firms.
- Partial evidence
- Its own public description names part of network security assessment firms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name network security assessment 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 22,693 network security assessment firms worldwide
See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 75,005 reachable decision-makers.
Free signup · no credit card
Network security assessment 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 network security assessment 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 network security assessment firms are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “network security assessment 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 network security assessment 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 network security assessment 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, 75,005 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.
Network security assessment firms by location
160 lists · largest firstEvery Network security assessment firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Network security assessment firms based in the United States5,763
- Network security assessment firms based in India1,738
- Network security assessment firms based in the United Kingdom1,431
- Network security assessment firms based in Australia776
- Network security assessment firms based in Canada763
- Network security assessment firms based in France747
- Network security assessment firms based in Brazil625
- Network security assessment firms based in Germany569
- Network security assessment firms based in the Netherlands404
- Network security assessment firms based in Spain361
- Network security assessment firms based in the United Arab Emirates327
- Network security assessment firms based in Italy313
- Network security assessment firms based in Mexico266
- Network security assessment firms based in South Africa229
- Network security assessment firms based in Türkiye224
- Network security assessment firms based in Israel202
- Network security assessment firms based in Switzerland194
- Network security assessment firms based in Belgium191
- Network security assessment firms based in Pakistan178
- Network security assessment firms based in Chile154
- Network security assessment firms based in Poland153
- Network security assessment firms based in Sweden152
- Network security assessment firms based in Colombia149
- Network security assessment firms based in Saudi Arabia140
- Network security assessment firms based in Indonesia131
- Network security assessment firms based in Nigeria126
- Network security assessment firms based in Singapore125
- Network security assessment firms based in Argentina103
- Network security assessment firms based in Austria90
- Network security assessment firms based in New Zealand88
- Network security assessment firms based in Romania81
- Network security assessment firms based in Malaysia80
- Network security assessment firms based in Kenya77
- Network security assessment firms based in Denmark76
- Network security assessment firms based in Portugal68
- Network security assessment firms based in Ireland66
- Network security assessment firms based in Finland63
- Network security assessment firms based in Ecuador61
- Network security assessment firms based in Morocco61
- Network security assessment firms based in Greece58
- Network security assessment firms based in Peru57
- Network security assessment firms based in Egypt56
- Network security assessment firms based in Hungary56
- Network security assessment firms based in Japan51
- Network security assessment firms based in Ukraine46
- Network security assessment firms based in the Philippines46
- Network security assessment firms based in Thailand45
- Network security assessment firms based in Bulgaria42
- Network security assessment firms based in Estonia42
- Network security assessment firms based in Ghana42
- Network security assessment firms based in Norway39
- Network security assessment firms based in Hong Kong36
- Network security assessment firms based in Qatar35
- Network security assessment firms based in the Dominican Republic35
- Network security assessment firms based in Jordan34
- Network security assessment firms based in Slovakia34
- Network security assessment firms based in Luxembourg31
- Network security assessment firms based in Tunisia31
- Network security assessment firms based in Cyprus29
Cities
- Network security assessment firms based in London, United Kingdom577
- Network security assessment firms based in Paris, France226
- Network security assessment firms based in Sao Paulo, Brazil222
- Network security assessment firms based in Dubai, United Arab Emirates194
- Network security assessment firms based in Toronto, Canada177
- Network security assessment firms based in New York, United States166
- Network security assessment firms based in Sydney, Australia165
- Network security assessment firms based in Melbourne, Australia152
- Network security assessment firms based in Hyderabad, India137
- Network security assessment firms based in Pune, India135
- Network security assessment firms based in Bangalore, India112
- Network security assessment firms based in Houston, United States111
- Network security assessment firms based in Washington, United States111
- Network security assessment firms based in Atlanta, United States107
- Network security assessment firms based in Austin, United States107
- Network security assessment firms based in Singapore, Singapore107
- Network security assessment firms based in Mumbai, India103
- Network security assessment firms based in Dallas, United States98
- Network security assessment firms based in Riyadh, Saudi Arabia98
- Network security assessment firms based in Chicago, United States97
- Network security assessment firms based in New Delhi, India96
- Network security assessment firms based in Madrid, Spain93
- Network security assessment firms based in Chennai, India91
- Network security assessment firms based in Istanbul, Türkiye89
- Network security assessment firms based in Miami, United States87
- Network security assessment firms based in Bengaluru, India83
- Network security assessment firms based in Montreal, Canada82
- Network security assessment firms based in Noida, India79
- Network security assessment firms based in San Francisco, United States77
- Network security assessment firms based in Ahmedabad, India76
- Network security assessment firms based in Tampa, United States74
- Network security assessment firms based in Calgary, Canada71
- Network security assessment firms based in Nairobi, Kenya67
- Network security assessment firms based in Stockholm, Sweden67
- Network security assessment firms based in Ottawa, Canada62
- Network security assessment firms based in Brisbane, Australia61
- Network security assessment firms based in Barcelona, Spain60
- Network security assessment firms based in Johannesburg, South Africa58
- Network security assessment firms based in Berlin, Germany57
- Network security assessment firms based in Los Angeles, United States56
- Network security assessment firms based in Manchester, United Kingdom56
- Network security assessment firms based in Santiago, Chile56
- Network security assessment firms based in San Diego, United States55
- Network security assessment firms based in Arlington, United States54
- Network security assessment firms based in Denver, United States53
- Network security assessment firms based in Columbia, United States52
- Network security assessment firms based in Tel Aviv, Israel52
- Network security assessment firms based in Canberra, Australia50
- Network security assessment firms based in Charlotte, United States49
- Network security assessment firms based in Boston, United States48
- Network security assessment firms based in Vancouver, Canada46
- Network security assessment firms based in Bogota, Colombia45
- Network security assessment firms based in Karachi, Pakistan45
- Network security assessment firms based in Orlando, United States45
- Network security assessment firms based in Seattle, United States44
- Network security assessment firms based in Delhi, India42
- Network security assessment firms based in Rio De Janeiro, Brazil42
- Network security assessment firms based in Alexandria, United States40
- Network security assessment firms based in Amsterdam, Netherlands40
- Network security assessment firms based in San Antonio, United States40
- Network security assessment firms based in Auckland, New Zealand39
- Network security assessment firms based in Las Vegas, United States38
- Network security assessment firms based in Phoenix, United States38
- Network security assessment firms based in Bucharest, Romania37
- Network security assessment firms based in Gurgaon, India37
- Network security assessment firms based in Gurugram, India37
- Network security assessment firms based in Jakarta, Indonesia37
- Network security assessment firms based in Quito, Ecuador36
- Network security assessment firms based in Reston, United States36
- Network security assessment firms based in Baltimore, United States35
- Network security assessment firms based in Sheridan, United States35
- Network security assessment firms based in Warszawa, Poland35
- Network security assessment firms based in Lima, Peru34
- Network security assessment firms based in Ankara, Türkiye33
- Network security assessment firms based in Cape Town, South Africa33
- Network security assessment firms based in Mclean, United States32
- Network security assessment firms based in Wilmington, United States32
- Network security assessment firms based in Fairfax, United States31
- Network security assessment firms based in Raleigh, United States31
- Network security assessment firms based in Rome, Italy30
- Network security assessment firms based in Zurich, Switzerland30
- Network security assessment firms based in Belo Horizonte, Brazil29
- Network security assessment firms based in Tallinn, Estonia29
- Network security assessment firms based in Ashburn, United States28
- Network security assessment firms based in Bangkok, Thailand28
- Network security assessment firms based in Huntsville, United States28
- Network security assessment firms based in Minneapolis, United States28
- Network security assessment firms based in Munich, Germany28
- Network security assessment firms based in Adelaide, Australia27
- Network security assessment firms based in Birmingham, United Kingdom27
- Network security assessment firms based in Philadelphia, United States27
- Network security assessment firms based in Wellington, New Zealand27
- Network security assessment firms based in Colorado Springs, United States26
- Network security assessment firms based in Columbus, United States26
- Network security assessment firms based in Kyiv, Ukraine26
- Network security assessment firms based in Lyon, France26
- Network security assessment firms based in Scottsdale, United States26
- Network security assessment firms based in Budapest, Hungary25
- Network security assessment firms based in Kuala Lumpur, Malaysia25
- Network security assessment firms based in Mississauga, Canada25
- Network security assessment firms based in Roma, Italy25
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 network security assessment 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 network security assessment firms are there worldwide?
RevenueBase identified 22,693 network security assessment 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 network security assessment firms?
The United States leads with 5,763 companies, followed by India (1,738) and the United Kingdom (1,431). Every network security assessment firms list by country and city is linked on this page.
Which city has the most network security assessment firms?
London leads with 584 headquartered companies, followed by Paris (226) and Sao Paulo (222).
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 75,005 verified decision-maker contacts tracked across these 22,693 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.
Ready to reach these companies? Verified emails and direct dials for all 22,693 network security assessment firms 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.