Company lists · Data refreshed November 2026

Top 25 Website security testing services worldwide

Name: Website security testing services worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 5, 2026 3,541 companies tracked

RevenueBase identified 3,541 company matches for website security testing services worldwide as of November 2026 and tracks 32,351 professional contacts across them, including 8,667 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for website security testing 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 November 5, 2026. Country and city lists for website security testing 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 Nov 5, 2026 How this list was built

3,541Companies

32,351Contacts tracked

8,667Verified emails

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The 25 largest website security testing services worldwide

Ranked by team size

Top 25 of 3,541 company matches for website security testing services worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 5, 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	COBRA	Exact match	London, United KingdomHQ recorded Nov 5, 2026	n/a	782 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 · Nov 5, 2026 · View company records in RevenueBase
2	Synack RED Team	Exact match	Austin, TX, United StatesHQ recorded Nov 5, 2026	n/a	693 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 5, 2026 · View company records in RevenueBase
3	Bishop FOX	Exact match	Tempe, AZ, United StatesHQ recorded Nov 5, 2026	201-500	357 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 5, 2026 · View company records in RevenueBase
4	Talakunchi Networks PVT LTD	Exact match	Mumbai, IndiaHQ recorded Nov 5, 2026	201-500	355 contacts →
	Exact match “T A L A K U N C H I Networks Pvt.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
5	Invicti	Exact match	Austin, United StatesHQ recorded Nov 5, 2026	201-500	347 contacts →
	Exact match “Invicti is transforming the way web applications are secured.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
6	Techdefence	Exact match	Ahmedabad, IndiaHQ recorded Nov 5, 2026	201-500	346 contacts →
	Exact match “TechDefence Labs (TechD Cybersecurity Limited) Award-winning \| Innovative \| Visionary We empower organizations across the globe to secure their applications, networks, and digital…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
7	Cobalt	Exact match	San Francisco, CA, United StatesHQ recorded Nov 5, 2026	201-500	335 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 5, 2026 · View company records in RevenueBase
8	Prescient Security	Exact match	Nashville, TN, United StatesHQ recorded Nov 5, 2026	201-500	317 contacts →
	Exact match “Prescient Security is a global cybersecurity and compliance firm delivering risk-based audits, advanced penetration testing, and end-to-end framework support.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
9	Portswigger	Exact match	Knutsford, United KingdomHQ recorded Nov 5, 2026	51-200	288 contacts →
	Exact match “PortSwigger is a global leader in the creation of software tools for security testing of web applications.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
10	Aikido Security	Exact match	Ghent, BelgiumHQ recorded Nov 5, 2026	201-500	259 contacts →
	Exact match “Software development has changed.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
11	TCM Security	Exact match	Charlotte, NC, United StatesHQ recorded Nov 5, 2026	n/a	251 contacts →
	Exact match “A veteran-owned cybersecurity company focused on penetration testing, security training, and compliance.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
12	Kualitatem INC	Exact match	NY, United StatesHQ recorded Nov 5, 2026	201-500	199 contacts →
	Exact match “Kualitatem empowers businesses to deliver quality software.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
13	Matrix 2bsecure	Exact match	Tel Aviv, IsraelHQ recorded Nov 5, 2026	51-200	198 contacts →
	Exact match “2Bsecure Ltd.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
14	Ampcus Cyber	Exact match	Chantilly, United StatesHQ recorded Nov 5, 2026	1,001-5,000	194 contacts →
	Exact match “Trusted By 2,880+ World-Class Brands And Organizations Of All Sizes…!” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
15	NET Square Solutions Pvt. LTD	Exact match	Ahmedabad, IndiaHQ recorded Nov 5, 2026	51-200	191 contacts →
	Exact match “Net Square is a company specializing in information security.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
16	Synacktiv	Exact match	Paris, FranceHQ recorded Nov 5, 2026	201-500	185 contacts →
	Exact match “Synacktiv is an offensive security company founded in 2012 by several security experts.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
17	Sdad Technology Pvt. LTD	Exact match	Noida, IndiaHQ recorded Nov 5, 2026	201-500	178 contacts →
	Exact match “Most businesses don't have a marketing problem, a visibility problem, or a security problem in isolation, they have all three, quietly working against each other.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
18	Yogosha	Exact match	Paris, FranceHQ recorded Nov 5, 2026	n/a	177 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 5, 2026 · View company records in RevenueBase
19	Valuementor	Exact match	Houston, United StatesHQ recorded Nov 5, 2026	51-200	176 contacts →
	Exact match “ValueMentor is a global information security consulting & services company that delivers real results to global business in maximizing cybersecurity.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
20	Attackiq	Exact match	Los Altos, United StatesHQ recorded Nov 5, 2026	51-200	160 contacts →
	Exact match “AttackIQ is the leader in threat-informed Continuous Threat Exposure Management (CTEM), helping organizations continuously validate defenses, break attack paths, and reduce threat…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
21	Payatu	Exact match	Pune, IndiaHQ recorded Nov 5, 2026	51-200	158 contacts →
	Exact match “At Payatu we believe in following one’s passion and with that thought, we have created a world class team of researchers and executors who are bending the rules to provide state…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
22	Citadel Cyber Security	Exact match	Rehovot, IsraelHQ recorded Nov 5, 2026	51-200	157 contacts →
	Exact match “Citadel is an Information Security Consulting company.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
23	Nuharbor	Exact match	Colchester, DC, United StatesHQ recorded Nov 5, 2026	51-200	151 contacts →
	Exact match “nuHarbor is a U.S-based cybersecurity firm trusted by public sector and critical infrastructure organizations nationwide.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
24	Securelayer7	Exact match	Pune, NY, IndiaHQ recorded Nov 5, 2026	51-200	146 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 5, 2026 · View company records in RevenueBase
25	Astra Security	Exact match	Claymont, United StatesHQ recorded Nov 5, 2026	51-200	135 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 5, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “website security testing services”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 3,541 website security testing services worldwide

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Website security testing services worldwide at a glance

As of Nov 5, 2026

26.8%Verified-email coverage

9.1Average contacts per company

1-10Median size (employees)

2.1%Largest-city concentration · London

Nov 5, 2026Page data refreshed

Companies by employee count

1-10

2,248

11-50

1,052

51-200

178

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 website security testing services are linked below.
What qualifies: Company records worldwide whose business descriptions match “website security testing 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 8,667 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 5, 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.

Website security testing services by location

22 lists · largest first

Every Website security testing 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 “website security testing services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many website security testing services are there worldwide?

RevenueBase identified 3,541 company matches for website security testing services 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?

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

Which country has the most website security testing services?

The United States leads with 640 companies, followed by India (458) and the United Kingdom (216). Every website security testing services list by country and city is linked on this page.

Which city has the most website security testing services?

London leads with 76 company records, followed by Bangalore (51) and Hyderabad (44).

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 8,667 professional contacts with verified work emails tracked across these 3,541 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 5, 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.