Company lists · Data refreshed November 2026

Top 25 Ehr system penetration testing companies worldwide

RevenueBase identified 2,256 company matches for ehr system penetration testing companies worldwide as of November 2026 and tracks 17,688 professional contacts across them, including 4,742 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for ehr system penetration testing companies 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 November 6, 2026. Country and city lists for ehr system penetration testing companies 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 Nov 6, 2026 How this list was built
2,256Companies
17,688Contacts tracked
4,742Verified emails
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The 25 largest ehr system penetration testing companies worldwide

Ranked by team size
Top 25 of 2,256 company matches for ehr system penetration testing companies worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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 matchAustin, TX, United StatesHQ recorded Nov 6, 2026n/a693 contacts →

Exact match

“The Synack Red Team is a private freelance security research team that spans 6 continents and over 80 countries.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchMinneapolis, MN, United StatesHQ recorded Nov 6, 2026501-1,000608 contacts →

Exact match

“NetSPI® pioneered Penetration Testing as a Service (PTaaS) and leads the industry in modern, continuous pentesting.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchTempe, AZ, United StatesHQ recorded Nov 6, 2026201-500357 contacts →

Exact match

“Bishop Fox is recognized as the leading authority in offensive security, providing solutions ranging from continuous penetration testing, red teaming, and attack surface…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchSan Francisco, CA, United StatesHQ recorded Nov 6, 2026201-500335 contacts →

Exact match

“Cobalt is the pioneer in pentesting as a service and a leader in offensive security services.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchGhent, BelgiumHQ recorded Nov 6, 2026201-500259 contacts →

Exact match

“Software development has changed.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchCharlotte, NC, United StatesHQ recorded Nov 6, 2026n/a251 contacts →

Exact match

“A veteran-owned cybersecurity company focused on penetration testing, security training, and compliance.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchAhmedabad, IndiaHQ recorded Nov 6, 202651-200191 contacts →

Exact match

“Net Square is a company specializing in information security.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchParis, FranceHQ recorded Nov 6, 2026201-500185 contacts →

Exact match

“Synacktiv is an offensive security company founded in 2012 by several security experts.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchParis, FranceHQ recorded Nov 6, 2026n/a177 contacts →

Exact match

“Yogosha is an Offensive Security Testing Platform that allows companies and governments to raise their security posture.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchPune, NY, IndiaHQ recorded Nov 6, 202651-200146 contacts →

Exact match

“SecureLayer7 is a CREST accredited advanced offensive security solutions provider, combining deep expertise with innovative products to protect modern digital enterprises.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchClaymont, United StatesHQ recorded Nov 6, 202651-200135 contacts →

Exact match

“Astra Security is a leader in the penetration testing space, recognized by G2 in the Pentest category.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchMadrid, SpainHQ recorded Nov 6, 202651-200133 contacts →

Exact match

“Tarlogic is an international company that specializes in cyber intelligence and cybersecurity.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchSeattle, United StatesHQ recorded Nov 6, 202651-200115 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 · Nov 6, 2026 · View company records in RevenueBase
14Exact matchZayed City, United Arab EmiratesHQ recorded Nov 6, 202651-200108 contacts →

Exact match

“Lumiverse Solutions Pvt Ltd is a leading cybersecurity services company that offers comprehensive and cutting-edge solutions to businesses of all sizes.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchLeeds, United KingdomHQ recorded Nov 6, 202651-200106 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 · Nov 6, 2026 · View company records in RevenueBase
16Exact matchDenver, CO, United StatesHQ recorded Nov 6, 202651-200102 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 · Nov 6, 2026 · View company records in RevenueBase
17Exact matchPune, IndiaHQ recorded Nov 6, 202651-200102 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 · Nov 6, 2026 · View company records in RevenueBase
18Exact matchDelhi, IndiaHQ recorded Nov 6, 202651-200102 contacts →

Exact match

“Ignite Technologies and Hacking Articles, empowers organizations and cybersecurity professionals to stay ahead of evolving threats through hands-on training and expert-driven…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchChennai, CA, IndiaHQ recorded Nov 6, 202651-20092 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 · Nov 6, 2026 · View company records in RevenueBase
20Exact matchKathmandu, NepalHQ recorded Nov 6, 202651-20082 contacts →

Exact match

“We are Nepal based Information Security company working with like minded security enthusiasts.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchToronto, CanadaHQ recorded Nov 6, 202651-20080 contacts →

Exact match

“Packetlabs is CREST-accredited and SOC 2 Type II attested, demonstrating our commitment to security excellence.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchJacksonville, FL, United StatesHQ recorded Nov 6, 202651-20079 contacts →

Exact match

“OnDefend specializes in advanced cybersecurity testing that delivers ongoing security validation across the most complex technology environments.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchTübingen, GermanyHQ recorded Nov 6, 202651-20077 contacts →

Exact match

“Die SySS GmbH ist ein herstellerunabhängiger IT-Sicherheitsdienstleister und führender Anbieter für Penetrationstests in der DACH-Region.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchParis, FranceHQ recorded Nov 6, 202651-20069 contacts →

Exact match

“LEXFO is an offensive security firm that assesses and strengthens your systems with an expert, pragmatic, results-driven approach.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchJakarta Selatan, IndonesiaHQ recorded Nov 6, 202651-20067 contacts →

Exact match

“Seclab Indonesia is cyber security consulting company that primarily focus on specialized penetration testing, reverse engineering and human development.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 2,256 ehr system penetration testing companies worldwide

See the full list, filter by size, metro and specialty, and access 4,742 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Ehr system penetration testing companies worldwide at a glance

As of Nov 6, 2026
26.8%Verified-email coverage
7.8Average contacts per company
1-10Median size (employees)
2.4%Largest-city concentration · London
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
1,525
11-50
597
51-200
103
201-500
19
501-1,000
3
1,001-5,000
7
10001+
2

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 ehr system penetration testing companies are linked below.
What qualifies
Company records worldwide whose business descriptions match “ehr system penetration testing companies” 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 4,742 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 November 6, 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.

Ehr system penetration testing companies by location

12 lists · largest first

Every Ehr system penetration testing companies 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 “ehr system penetration testing companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many ehr system penetration testing companies are there worldwide?

RevenueBase identified 2,256 company matches for ehr system penetration testing companies worldwide as of November 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?

Synack RED Team tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most ehr system penetration testing companies?

The United States leads with 374 companies, followed by India (308) and the United Kingdom (134). Every ehr system penetration testing companies list by country and city is linked on this page.

Which city has the most ehr system penetration testing companies?

London leads with 54 company records, followed by Pune (30) and Bangalore (28).

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 4,742 professional contacts with verified work emails tracked across these 2,256 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 November 6, 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.