Company lists · Data refreshed September 2026

Top 25 Vulnerability assessment service providers worldwide

Name: Vulnerability assessment service providers worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 22, 2026 2,845 companies tracked

RevenueBase identified 2,845 vulnerability assessment service providers worldwide as of September 2026 and tracks 35,607 professional contacts across them, including 5,556 with verified work emails. The United States is the largest market and London the largest hub.

This list covers vulnerability assessment service providers 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 22, 2026. Country and city lists for vulnerability assessment service providers 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 22, 2026 86% judged on-target in blind review

2,845Companies

35,607Contacts tracked

5,556Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest vulnerability assessment service providers worldwide

Ranked by team size

Top 25 of 2,845 vulnerability assessment service providers worldwide, ranked by team size, largest first. Data refreshed Sep 22, 2026. RevenueBase Smart Search rates how each company's information relates to vulnerability assessment service providers: 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 22, 2026	n/a	12,771 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 22, 2026
2	COBRA	Partial evidence	London, United KingdomHQ checked Sep 22, 2026	n/a	705 contacts →
	Partial evidence “Get a free, powerful security assessment with personalised recommendations, the same analysis that costs from IT Consultancies.” Source: RevenueBase Database · checked Sep 22, 2026
3	Cobalt	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 22, 2026	201-500	350 contacts →
	Indirect evidence “Cobalt is the pioneer in pentesting as a service and a leader in offensive security services.” Source: RevenueBase Database · checked Sep 22, 2026
4	Techdefence	Indirect evidence	Ahmedabad, IndiaHQ checked Sep 22, 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 22, 2026
5	Securin INC	Indirect evidence	Albuquerque, NM, United StatesHQ checked Sep 22, 2026	201-500	244 contacts →
	Indirect evidence “Securin is obsessed with helping leaders continuously improve their security posture.” Source: RevenueBase Database · checked Sep 22, 2026
6	Synack	Indirect evidence	Redwood City, CA, United StatesHQ checked Sep 22, 2026	201-500	237 contacts →
	Indirect evidence “Synack is the leader in human-led and agentic AI-powered Penetration Testing as a Service (PTaaS), transforming offensive security to help organizations proactively reduce risk…” Source: RevenueBase Database · checked Sep 22, 2026
7	TAC Security	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 22, 2026	51-200	208 contacts →
	Partial evidence “TAC Security (NSE: TAC) TAC Security, a leading publicly listed global cybersecurity company specializing in vulnerability management, today serves clients across 100 countries…” Source: RevenueBase Database · checked Sep 22, 2026
8	Matrix 2bsecure	Indirect evidence	Tel Aviv, IsraelHQ checked Sep 22, 2026	51-200	180 contacts →
	Indirect evidence “2Bsecure Ltd.” Source: RevenueBase Database · checked Sep 22, 2026
9	Payatu	Indirect evidence	Pune, IndiaHQ checked Sep 22, 2026	51-200	156 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 22, 2026
10	Aikido Security	Partial evidence	Ghent, BelgiumHQ checked Sep 22, 2026	201-500	154 contacts →
	Partial evidence “From vulnerability management to penetration testing, secure everything you build, host, and run with Aikido.” Source: RevenueBase Database · checked Sep 22, 2026
11	Redseal, INC	Indirect evidence	Menlo Park, CA, United StatesHQ checked Sep 22, 2026	51-200	154 contacts →
	Indirect evidence “RedSeal is an agentless, AI enabled exposure management platform for hybrid and remote infrastructure.” Source: RevenueBase Database · checked Sep 22, 2026
12	Securelayer7	Indirect evidence	Pune, IndiaHQ checked Sep 22, 2026	51-200	149 contacts →
	Indirect evidence “SecureLayer7 is a CREST accredited advanced offensive security solutions provider, combining deep expertise with innovative products to protect modern digital enterprises.” Source: RevenueBase Database · checked Sep 22, 2026
13	RNS Technology Services	Indirect evidence	Dubai, United Arab EmiratesHQ checked Sep 22, 2026	51-200	147 contacts →
	Indirect evidence “RNS Technology Services, which has grown massively in the UAE, Qatar, Saudi, Singapore, Malaysia & India, is an international award-winning cybersecurity Value-Added Reseller and…” Source: RevenueBase Database · checked Sep 22, 2026
14	Safebreach	Indirect evidence	Sunnyvale, CA, United StatesHQ checked Sep 22, 2026	51-200	138 contacts →
	Indirect evidence “SafeBreach is on a mission to help organizations have certainty in their security.” Source: RevenueBase Database · checked Sep 22, 2026
15	Tracesecurity	Partial evidence	Baton Rouge, LA, United StatesHQ checked Sep 22, 2026	51-200	115 contacts →
	Partial evidence “TraceSecurity is a leading cybersecurity services company, providing a broad range of services and solutions in IT security compliance, risk and vulnerability management, and…” Source: RevenueBase Database · checked Sep 22, 2026
16	Strategic Security	Partial evidence	Alexandria, VA, United StatesHQ checked Sep 22, 2026	n/a	113 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 22, 2026
17	Securium Solutions Private Limited	Indirect evidence	Noida, IndiaHQ checked Sep 22, 2026	11-50	112 contacts →
	Indirect evidence “Securium Solutions Private Limited is a CERT-In Empanelled cybersecurity company helping organizations secure their digital infrastructure against evolving cyber threats.” Source: RevenueBase Database · checked Sep 22, 2026
18	Directdefense	Partial evidence	Denver, CO, United StatesHQ checked Sep 22, 2026	51-200	111 contacts →
	Partial evidence “DirectDefense provides enterprise risk assessments, penetration testing, ICS/SCADA security services, and 24/7 managed security services for companies of all sizes.” Source: RevenueBase Database · checked Sep 22, 2026
19	Greenbone AG	Partial evidence	Osnabrueck, GermanyHQ checked Sep 22, 2026	51-200	109 contacts →
	Partial evidence “With over installations worldwide, Greenbone is the most widely used provider of open source vulnerability management.” Source: RevenueBase Database · checked Sep 22, 2026
20	WATI	Indirect evidence	Folsom, CA, United StatesHQ checked Sep 22, 2026	201-500	109 contacts →
	Indirect evidence “West Advanced Technologies, Inc.(WATI) is a California-headquartered technology solutions provider, delivering 100% success for clients from government agencies, tech companies…” Source: RevenueBase Database · checked Sep 22, 2026
21	Ioactive, INC	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 22, 2026	51-200	107 contacts →
	Indirect evidence “IOActive is a trusted partner for Global enterprises, providing research-fueled security services across all industries.” Source: RevenueBase Database · checked Sep 22, 2026
22	Lightech	Indirect evidence	Capital Federal, ArgentinaHQ checked Sep 22, 2026	51-200	107 contacts →
	Indirect evidence “Since 1996, we help companies to improve their cybersecurity posture.” Source: RevenueBase Database · checked Sep 22, 2026
23	Encureit Systems Private Limited	Indirect evidence	Pune, IndiaHQ checked Sep 22, 2026	51-200	105 contacts →
	Indirect evidence “EncureIT System is primarily an Information Security Specialist Company that believes in delivering comprehensive professional security services to its clients.” Source: RevenueBase Database · checked Sep 22, 2026
24	Appcheck LTD	Partial evidence	Leeds, United KingdomHQ checked Sep 22, 2026	51-200	99 contacts →
	Partial evidence “AppCheck is a Complete Enterprise Security Testing Solution that provides up to the minute vulnerability coverage for your entire estate.” Source: RevenueBase Database · checked Sep 22, 2026
25	Connectsecure	Partial evidence	Tampa, United StatesHQ checked Sep 22, 2026	51-200	99 contacts →
	Partial evidence “ConnectSecure empowers information security professionals to safeguard their business-critical data from vulnerabilities and exploits.” Source: RevenueBase Database · checked Sep 22, 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: vulnerability assessment service providers. 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 vulnerability assessment service providers.
Partial evidence: Its own public description names part of vulnerability assessment service providers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name vulnerability assessment service providers. 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 2,845 vulnerability assessment service providers worldwide

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 5,556 reachable decision-makers.

Free signup · no credit card

View the full list →

Vulnerability assessment service providers worldwide at a glance

As of Sep 22, 2026

15.6%Verified-email coverage

12.5Average contacts per company

1-10Median size (employees)

2.0%Largest-city concentration · London

Sep 22, 2026Page data refreshed

Companies by employee count

1-10

1,841

11-50

834

51-200

137

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 vulnerability assessment service providers, 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 vulnerability assessment service providers are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “vulnerability assessment service providers”. 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 vulnerability assessment service providers), 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 vulnerability assessment service providers, 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, 5,556 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 22, 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.

Vulnerability assessment service providers by location

12 lists · largest first

Every Vulnerability assessment service providers list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

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 vulnerability assessment service providers, 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 vulnerability assessment service providers are there worldwide?

RevenueBase identified 2,845 vulnerability assessment service providers 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 vulnerability assessment service providers?

The United States leads with 678 companies, followed by India (342) and the United Kingdom (162). Every vulnerability assessment service providers list by country and city is linked on this page.

Which city has the most vulnerability assessment service providers?

London leads with 57 headquartered companies, followed by Hyderabad (30) and Pune (30).

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 5,556 verified decision-maker contacts tracked across these 2,845 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 22, 2026.

Ready to reach these companies? Verified emails and direct dials for all 2,845 vulnerability assessment service providers 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.