Company lists · Data refreshed September 2026
Top 25 Information security assessment services worldwide
RevenueBase identified 11,261 information security assessment services worldwide as of September 2026 and tracks 114,544 professional contacts across them, including 31,404 with verified work emails. The United States is the largest market and London the largest hub.
This list covers information security assessment services 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 28, 2026. Country and city lists for information security assessment services follow the table.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest information security assessment services worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 12,771 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 28, 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 28, 2026Thanks. The Data Team will review it. | |||||
| 3 | 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 28, 2026Thanks. The Data Team will review it. | |||||
| 4 | 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 28, 2026Thanks. The Data Team will review it. | |||||
| 5 | 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 28, 2026Thanks. The Data Team will review it. | |||||
| 6 | 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 28, 2026Thanks. The Data Team will review it. | |||||
| 7 | 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 28, 2026Thanks. The Data Team will review it. | |||||
| 8 | 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 28, 2026Thanks. The Data Team will review it. | |||||
| 9 | 628 contacts → | ||||
Indirect evidence “VikingCloud delivers battle-tested cybersecurity and compliance solutions that simply work.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 10 | 506 contacts → | ||||
Indirect evidence “Founded in 2008, OWN is a Pure Player in cybersecurity, with offices in Paris, Rennes and Toulouse, but with a presence throughout France with its fully remote employees.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 11 | 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 28, 2026Thanks. The Data Team will review it. | |||||
| 12 | 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 28, 2026Thanks. The Data Team will review it. | |||||
| 13 | 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 28, 2026Thanks. The Data Team will review it. | |||||
| 14 | 394 contacts → | ||||
Indirect evidence “CPX is redefining how nations and industries secure their future.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 15 | 386 contacts → | ||||
Indirect evidence “Progress is our motivation because we are convinced that it will lead us to a successful future – independent of industries, companies and social classes.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 16 | 382 contacts → | ||||
Indirect evidence “NEVERHACK is a French group specialized in cybersecurity for over 40 years.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 17 | 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 28, 2026Thanks. The Data Team will review it. | |||||
| 18 | 363 contacts → | ||||
Indirect evidence “Wir glauben an eine sichere digitale Zukunft mit minimalen Risiken und maximalen Chancen.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 19 | 359 contacts → | ||||
Strong evidence “Founded in 2010, Synetis is the leading independent French consultancy firm specialising in information systems security (ISS).” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 20 | 352 contacts → | ||||
Partial evidence “We are an Australian-owned, full-service ICT Solutions and Cyber Security provider with a locally based team of over 450 passionate Aussies.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 21 | 348 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 22 | 340 contacts → | ||||
Indirect evidence “TechDefence Labs (TechD Cybersecurity Limited) Award-winning | Innovative | Visionary We empower organizations across the globe to secure their applications, networks, and digital…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 23 | 335 contacts → | ||||
Indirect evidence “T A L A K U N C H I Networks Pvt.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 24 | 332 contacts → | ||||
Indirect evidence “Prevent Breach & Minimize Impact” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 25 | 329 contacts → | ||||
Indirect evidence “UpGuard is the only platform that unifies cyber risk management across the vendor supply chain, attack surface, and human workforce.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: information security assessment services. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names information security assessment services.
- Partial evidence
- Its own public description names part of information security assessment services, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name information security assessment services. 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 11,261 information security assessment services worldwide
See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 31,404 reachable decision-makers.
Free signup · no credit card
Information security assessment services worldwide at a glance
As of Sep 28, 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 information security assessment services, 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 information security assessment services are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “information security assessment services”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names information security assessment services), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among information security assessment services, 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, 31,404 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 28, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Information security assessment services by location
84 lists · largest firstEvery Information security assessment services list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Information security assessment services based in the United States2,776
- Information security assessment services based in India921
- Information security assessment services based in the United Kingdom746
- Information security assessment services based in Canada384
- Information security assessment services based in Australia364
- Information security assessment services based in Germany350
- Information security assessment services based in France345
- Information security assessment services based in Brazil268
- Information security assessment services based in the Netherlands246
- Information security assessment services based in Spain163
- Information security assessment services based in the United Arab Emirates152
- Information security assessment services based in Mexico114
- Information security assessment services based in Israel110
- Information security assessment services based in Switzerland109
- Information security assessment services based in South Africa108
- Information security assessment services based in Italy104
- Information security assessment services based in Belgium95
- Information security assessment services based in Poland95
- Information security assessment services based in Türkiye87
- Information security assessment services based in Sweden78
- Information security assessment services based in Colombia75
- Information security assessment services based in Chile72
- Information security assessment services based in Argentina61
- Information security assessment services based in Singapore61
- Information security assessment services based in New Zealand56
- Information security assessment services based in Saudi Arabia56
- Information security assessment services based in Indonesia55
- Information security assessment services based in Austria50
- Information security assessment services based in Ireland45
- Information security assessment services based in Romania44
- Information security assessment services based in Denmark43
- Information security assessment services based in Malaysia38
- Information security assessment services based in Portugal36
- Information security assessment services based in Hungary33
- Information security assessment services based in Egypt30
- Information security assessment services based in Finland30
- Information security assessment services based in Ukraine30
- Information security assessment services based in Greece27
- Information security assessment services based in Estonia26
Cities
- Information security assessment services based in London, United Kingdom282
- Information security assessment services based in Paris, France104
- Information security assessment services based in Sao Paulo, Brazil101
- Information security assessment services based in Toronto, Canada95
- Information security assessment services based in Dubai, United Arab Emirates84
- Information security assessment services based in Sydney, Australia84
- Information security assessment services based in Hyderabad, India77
- Information security assessment services based in Melbourne, Australia74
- Information security assessment services based in New York, United States74
- Information security assessment services based in Pune, India74
- Information security assessment services based in Bangalore, India66
- Information security assessment services based in Mumbai, India65
- Information security assessment services based in Atlanta, United States63
- Information security assessment services based in Houston, United States56
- Information security assessment services based in Singapore, Singapore55
- Information security assessment services based in Chennai, India54
- Information security assessment services based in Austin, United States53
- Information security assessment services based in Washington, United States52
- Information security assessment services based in San Francisco, United States49
- Information security assessment services based in New Delhi, India48
- Information security assessment services based in Bengaluru, India47
- Information security assessment services based in Chicago, United States45
- Information security assessment services based in Madrid, Spain45
- Information security assessment services based in Noida, India44
- Information security assessment services based in Ahmedabad, India42
- Information security assessment services based in Dallas, United States42
- Information security assessment services based in Miami, United States42
- Information security assessment services based in Tampa, United States42
- Information security assessment services based in Los Angeles, United States41
- Information security assessment services based in Istanbul, Türkiye39
- Information security assessment services based in Montreal, Canada38
- Information security assessment services based in Stockholm, Sweden38
- Information security assessment services based in Calgary, Canada36
- Information security assessment services based in Riyadh, Saudi Arabia36
- Information security assessment services based in Berlin, Germany33
- Information security assessment services based in Ottawa, Canada32
- Information security assessment services based in Arlington, United States30
- Information security assessment services based in Barcelona, Spain29
- Information security assessment services based in San Diego, United States29
- Information security assessment services based in Tel Aviv, Israel29
- Information security assessment services based in Manchester, United Kingdom28
- Information security assessment services based in Brisbane, Australia26
- Information security assessment services based in Canberra, Australia25
- Information security assessment services based in Santiago, Chile25
- Information security assessment services based in Seattle, 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 information security assessment services, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many information security assessment services are there worldwide?
RevenueBase identified 11,261 information security assessment services 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 information security assessment services?
The United States leads with 2,776 companies, followed by India (921) and the United Kingdom (746). Every information security assessment services list by country and city is linked on this page.
Which city has the most information security assessment services?
London leads with 285 headquartered companies, followed by Paris (104) and Sao Paulo (101).
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 31,404 verified decision-maker contacts tracked across these 11,261 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 28, 2026.
Ready to reach these companies? Verified emails and direct dials for all 11,261 information security assessment services 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.