Company lists · Data refreshed September 2026

Top 25 Pentest companies worldwide

Name: Pentest companies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 5,645 companies tracked

RevenueBase identified 5,645 pentest companies worldwide as of September 2026 and tracks 79,952 professional contacts across them, including 14,925 with verified work emails. The United States is the largest market and London the largest hub.

This list covers pentest companies 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 21, 2026. Country and city lists for pentest companies 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 21, 2026 86% judged on-target in blind review

5,645Companies

79,952Contacts tracked

14,925Verified emails

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The 25 largest pentest companies worldwide

Ranked by team size

Top 25 of 5,645 pentest companies worldwide, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to pentest companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Private Sector	Indirect evidence	United StatesHQ checked Sep 21, 2026	n/a	12,771 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 21, 2026
2	Hackerone	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 21, 2026	n/a	6,058 contacts →
	Indirect evidence “HackerOne is a global leader in Continuous Threat Exposure Management (CTEM) and the only solution provider that pairs the simultaneous trust of the Fortune 500 and the world's…” Source: RevenueBase Database · checked Sep 21, 2026
3	Bugcrowd	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 21, 2026	n/a	3,649 contacts →
	Indirect 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 21, 2026
4	AQM Technologies	Indirect evidence	Mumbai, IndiaHQ checked Sep 21, 2026	1,001-5,000	1,636 contacts →
	Indirect evidence “AQM Technologies Pvt.” Source: RevenueBase Database · checked Sep 21, 2026
5	Ec-Council	Indirect evidence	Albuquerque, NM, United StatesHQ checked Sep 21, 2026	1,001-5,000	1,294 contacts →
	Indirect evidence “EC-Council is the creator of the globally renowned Certified Ethical Hacker (CEH) program.” Source: RevenueBase Database · checked Sep 21, 2026
6	A1qa	Indirect evidence	Decatur, GA, United StatesHQ checked Sep 21, 2026	1,001-5,000	980 contacts →
	Indirect evidence “a1qa is a global software testing and QA outsourcing company trusted by IT firms and Fortune 500 enterprises to deliver software quality that holds under real-world pressure.” Source: RevenueBase Database · checked Sep 21, 2026
7	Synack RED Team	Indirect evidence	Austin, TX, United StatesHQ checked Sep 21, 2026	n/a	813 contacts →
	Indirect 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 21, 2026
8	Intigriti	Indirect evidence	Antwerpen, BelgiumHQ checked Sep 21, 2026	n/a	683 contacts →
	Indirect evidence “Intigriti is the trusted leader in crowdsourced security, empowering the world’s largest organizations to find and fix vulnerabilities before cybercriminals can exploit them.” Source: RevenueBase Database · checked Sep 21, 2026
9	Netspi	Strong evidence	Minneapolis, MN, United StatesHQ checked Sep 21, 2026	501-1,000	587 contacts →
	Strong evidence “NetSPI® pioneered Penetration Testing as a Service (PTaaS) and leads the industry in modern, continuous pentesting.” Source: RevenueBase Database · checked Sep 21, 2026
10	Yeswehack	Indirect evidence	Paris, FranceHQ checked Sep 21, 2026	51-200	586 contacts →
	Indirect evidence “YesWeHack is a leading Offensive Security and Exposure Management platform delivering integrated, API-based solutions to secure organisations’ growing attack surfaces.” Source: RevenueBase Database · checked Sep 21, 2026
11	Pentera	Strong evidence	Burlington, MA, United StatesHQ checked Sep 21, 2026	201-500	486 contacts →
	Strong evidence “Pentera provides AI-powered Automated Security Validation for enterprise security teams.” Source: RevenueBase Database · checked Sep 21, 2026
12	Javi Systems India Pvt. LTD	Indirect evidence	Gurgaon, IndiaHQ checked Sep 21, 2026	201-500	468 contacts →
	Indirect evidence “A privately held company Head Quartered in Bangalore and has a presence in New York.” Source: RevenueBase Database · checked Sep 21, 2026
13	Resillion	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	501-1,000	374 contacts →
	Indirect evidence “At Resillion, we're more than just a global leader in quality engineering, testing, and cyber security – we're your dedicated partner from the start of your project to its…” Source: RevenueBase Database · checked Sep 21, 2026
14	horizon3.ai	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 21, 2026	201-500	364 contacts →
	Indirect evidence “Horizon3.ai answers the two most important questions in cybersecurity: If someone tried to compromise us, would we hold up?” Source: RevenueBase Database · checked Sep 21, 2026
15	Esec Forte Technologies	Indirect evidence	Gurugram, IndiaHQ checked Sep 21, 2026	201-500	363 contacts →
	Indirect 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 21, 2026
16	Cobalt	Strong evidence	San Francisco, CA, United StatesHQ checked Sep 21, 2026	201-500	350 contacts →
	Strong evidence “Cobalt is the pioneer in pentesting as a service and a leader in offensive security services.” Source: RevenueBase Database · checked Sep 21, 2026
17	Bishop FOX	Indirect evidence	Tempe, AZ, United StatesHQ checked Sep 21, 2026	201-500	344 contacts →
	Indirect evidence “Bishop Fox is recognized as the leading authority in offensive security, providing solutions ranging from continuous penetration testing, red teaming, and attack surface…” Source: RevenueBase Database · checked Sep 21, 2026
18	Techdefence	Indirect evidence	Ahmedabad, IndiaHQ checked Sep 21, 2026	201-500	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 21, 2026
19	Talakunchi Networks PVT LTD	Indirect evidence	Mumbai, IndiaHQ checked Sep 21, 2026	201-500	335 contacts →
	Indirect evidence “T A L A K U N C H I Networks Pvt.” Source: RevenueBase Database · checked Sep 21, 2026
20	Sybrant Technologies P LTD	Indirect evidence	Chennai, IndiaHQ checked Sep 21, 2026	201-500	301 contacts →
	Indirect evidence “Sybrant is a leader in Independent Software Testing.” Source: RevenueBase Database · checked Sep 21, 2026
21	Zensoft Services	Indirect evidence	Pune, IndiaHQ checked Sep 21, 2026	201-500	285 contacts →
	Indirect evidence “Welcome to Qualitia - The Pioneers in Simplifying Test Automation!” Source: RevenueBase Database · checked Sep 21, 2026
22	Portswigger	Indirect evidence	Knutsford, United KingdomHQ checked Sep 21, 2026	51-200	267 contacts →
	Indirect evidence “PortSwigger is a global leader in the creation of software tools for security testing of web applications.” Source: RevenueBase Database · checked Sep 21, 2026
23	TBH	Indirect evidence	Kochi, IndiaHQ checked Sep 21, 2026	201-500	248 contacts →
	Indirect evidence “TechbyHeart safeguards the digital world through its dedicated Cybersecurity Wing, delivering expert services such as Vulnerability Assessment, Penetration Testing, Cybersecurity…” Source: RevenueBase Database · checked Sep 21, 2026
24	Qualitrix	Indirect evidence	Bengaluru, IndiaHQ checked Sep 21, 2026	201-500	244 contacts →
	Indirect evidence “Qualitrix is a Trust Engineering company helping enterprises build, modernize, and scale reliable digital and AI systems with confidence.” Source: RevenueBase Database · checked Sep 21, 2026
25	Securin INC	Indirect evidence	Albuquerque, NM, United StatesHQ checked Sep 21, 2026	201-500	244 contacts →
	Indirect evidence “Securin is obsessed with helping leaders continuously improve their security posture.” Source: RevenueBase Database · checked Sep 21, 2026

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: pentest companies. 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 pentest companies.
Partial evidence: Its own public description names part of pentest companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name pentest companies. 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 5,645 pentest companies worldwide

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Pentest companies worldwide at a glance

As of Sep 21, 2026

18.7%Verified-email coverage

14.2Average contacts per company

1-10Median size (employees)

2.5%Largest-city concentration · London

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

3,442

11-50

1,743

51-200

345

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

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among pentest companies, 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 pentest companies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “pentest companies”. 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 pentest companies), 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 pentest companies, 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, 14,925 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 21, 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.

Pentest companies by location

35 lists · largest first

Every Pentest 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 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 pentest companies, 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 pentest companies are there worldwide?

RevenueBase identified 5,645 pentest companies 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 pentest companies?

The United States leads with 936 companies, followed by India (712) and the United Kingdom (350). Every pentest companies list by country and city is linked on this page.

Which city has the most pentest companies?

London leads with 140 headquartered companies, followed by Sao Paulo (63) and Pune (59).

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 14,925 verified decision-maker contacts tracked across these 5,645 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 21, 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 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.