Company lists · Data refreshed September 2026

Top 25 Third party security assessment services worldwide

RevenueBase identified 1,182 company matches for third party security assessment services worldwide as of September 2026 and tracks 24,309 professional contacts across them, including 3,192 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for third party security assessment services worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 29, 2026. Country and city lists for third party security assessment services follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 29, 2026 How this list was built
1,182Companies
24,309Contacts tracked
3,192Verified emails
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The 25 largest third party security assessment services worldwide

Ranked by team size
Top 25 of 1,182 company matches for third party security assessment services worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 29, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchUnited StatesHQ recorded Sep 29, 2026n/a12,771 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
2Exact matchLondon, United KingdomHQ recorded Sep 29, 2026n/a705 contacts →

Exact match

“Get a free, powerful security assessment with personalised recommendations, the same analysis that costs from IT Consultancies.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
3Exact matchMountain View, CA, United StatesHQ recorded Sep 29, 2026201-500329 contacts →

Exact match

“UpGuard is the only platform that unifies cyber risk management across the vendor supply chain, attack surface, and human workforce.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
4Exact matchTel Aviv, IsraelHQ recorded Sep 29, 202651-200180 contacts →

Exact match

“2Bsecure Ltd.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
5Exact matchRehovot, IsraelHQ recorded Sep 29, 202651-200167 contacts →

Exact match

“Citadel is an Information Security Consulting company.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
6Exact matchNoida, IndiaHQ recorded Sep 29, 2026201-500166 contacts →

Exact match

“Phistream provides technical third party inspection services and IT support services to organisations in various domains.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
7Exact matchBoston, MA, United StatesHQ recorded Sep 29, 202651-200148 contacts →

Exact match

“Black Kite is an AI-native third-party cyber risk management platform built for the connected world.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
8Exact matchNashville, TN, United StatesHQ recorded Sep 29, 202651-200139 contacts →

Exact match

“KirkpatrickPrice is a licensed information security CPA firm, a PCI QSA, and a HITRUST CSF Assessor, providing assurance services to over clients worldwide.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
9Exact matchFrisco, TX, United StatesHQ recorded Sep 29, 202651-200135 contacts →

Exact match

“HITRUST is the leader in validated cybersecurity assurance used in third-party risk management and compliance.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
10Exact matchNew York, NY, United StatesHQ recorded Sep 29, 202651-200117 contacts →

Exact match

“Panorays is a leading provider of third-party cyber risk management solutions, helping businesses optimize their defenses for each unique third-party relationship.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
11Exact matchBaton Rouge, LA, United StatesHQ recorded Sep 29, 202651-200115 contacts →

Exact match

“TraceSecurity is a leading cybersecurity services company, providing a broad range of services and solutions in IT security compliance, risk and vulnerability management, and…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
12Exact matchAlexandria, VA, United StatesHQ recorded Sep 29, 2026n/a113 contacts →

Exact match

“Strategic Security is an IT Security consulting firm that provides in-depth technical security assessments of your network, web application, and regulatory compliance gap analysis…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
13Exact matchDenver, CO, United StatesHQ recorded Sep 29, 202651-200111 contacts →

Exact match

“DirectDefense provides enterprise risk assessments, penetration testing, ICS/SCADA security services, and 24/7 managed security services for companies of all sizes.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
14Exact matchParis, FranceHQ recorded Sep 29, 202651-200111 contacts →

Exact match

“Our services : Penetration tests and Security Audits, Gap Analysis and PCI DSS Certification, CERT-XMCO (vulnerability watch, Cyber Survellance/Threat Intelligence, Forensics).”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
15Exact matchSeattle, WA, United StatesHQ recorded Sep 29, 202651-200107 contacts →

Exact match

“IOActive is a trusted partner for Global enterprises, providing research-fueled security services across all industries.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
16Exact matchPune, IndiaHQ recorded Sep 29, 202651-200105 contacts →

Exact match

“EncureIT System is primarily an Information Security Specialist Company that believes in delivering comprehensive professional security services to its clients.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
17Exact matchLeeds, United KingdomHQ recorded Sep 29, 202651-20099 contacts →

Exact match

“AppCheck is a Complete Enterprise Security Testing Solution that provides up to the minute vulnerability coverage for your entire estate.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
18Exact matchNashville, TN, United StatesHQ recorded Sep 29, 2026201-50098 contacts →

Exact match

“Venminder by Ncontracts is an industry recognized leader of third-party risk management solutions.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
19Exact matchDubai, United Arab EmiratesHQ recorded Sep 29, 202651-20096 contacts →

Exact match

“DTS Solution - A Beyon Cyber Company DTS Solution is an innovative organization that redefines the cyber security services industry.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
20Exact matchSão Paulo, BrazilHQ recorded Sep 29, 202651-20096 contacts →

Exact match

“Empresa inovadora que realiza trabalhos de consultoria em Segurança da Informação e implementa soluções baseadas em produtos desenvolvidos pelos maiores fabricantes mundiais de…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
21Exact matchMakati City, PhilippinesHQ recorded Sep 29, 202651-20096 contacts →

Exact match

“We are a Philippine-based IT Security Services provider, currently working with Banking and Financial Institutions, Healthcare, Telecommunications, Real Estate, and Manufacturing…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
22Exact matchWellington, New ZealandHQ recorded Sep 29, 202651-20094 contacts →

Exact match

“Bastion Security combines the skills, expertise and leadership from Quantum Security, ZX Security, Helix Security, Cassini and now Cythera.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
23Exact matchPhoenix, AZ, United StatesHQ recorded Sep 29, 202651-20092 contacts →

Exact match

“Mitratech Prevalent takes the pain out of third-party risk management (TPRM).”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
24Exact matchChennai, IndiaHQ recorded Sep 29, 202651-20086 contacts →

Exact match

“Infoziant IT Solutions Inc is a Hall of Fame Information Security company, recognized by industry giants like Apple, Microsoft, Google, United Nations, Australian Govt, Dutch…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
25Exact matchSingaporeHQ recorded Sep 29, 202651-20080 contacts →

Exact match

“Since 2001, softScheck has been a prominent advocate for software security, dedicated to complying with ISO27034 and Microsoft Security Dev.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase

Showing 25 of 1,182 third party security assessment services worldwide

See the full list, filter by size, metro and specialty, and access 3,192 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Third party security assessment services worldwide at a glance

As of Sep 29, 2026
13.1%Verified-email coverage
20.6Average contacts per company
1-10Median size (employees)
2.6%Largest-city concentration · London
Sep 29, 2026Page data refreshed

Companies by employee count

1-10
729
11-50
342
51-200
87
201-500
17
1,001-5,000
2
5,001-10,000
2
10001+
1

Email recency is reported on each country list linked below.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
Coverage
Every country. Country and city lists for third party security assessment services are linked below.
What qualifies
Company records worldwide whose business descriptions match “third party security assessment services” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 3,192 professional contacts with verified work emails across the full matched dataset. 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.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Third party security assessment services by location

7 lists · largest first

Every Third party security assessment services list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “third party security assessment services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many third party security assessment services are there worldwide?

RevenueBase identified 1,182 company matches for third party security assessment services worldwide as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Private Sector tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most third party security assessment services?

The United States leads with 357 companies, followed by India (109) and the United Kingdom (82). Every third party security assessment services list by country and city is linked on this page.

Which city has the most third party security assessment services?

London leads with 31 company records, followed by New York (15) and Toronto (13).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 3,192 professional contacts with verified work emails tracked across these 1,182 companies; direct dials are available where recorded.

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 SmartSearch, 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.