Company lists · Data refreshed November 2026

Top 25 Ransomware defense services worldwide

RevenueBase identified 545 company matches for ransomware defense services worldwide as of November 2026 and tracks 8,261 professional contacts across them, including 3,856 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for ransomware defense 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 6, 2026. Country and city lists for ransomware defense 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 6, 2026 How this list was built
545Companies
8,261Contacts tracked
3,856Verified emails
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The 25 largest ransomware defense services worldwide

Ranked by team size
Top 25 of 545 company matches for ransomware defense services 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 matchSunnyvale, CA, United StatesHQ recorded Nov 6, 2026501-1,000879 contacts →

Exact match

“Illumio is the leader in ransomware and breach containment, redefining how organizations contain cyberattacks and enable operational resilience.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchEden Prairie, United StatesHQ recorded Nov 6, 2026501-1,000596 contacts →

Exact match

“Arcserve, the pioneer in unified data resilience, protects data from ransomware, cyberattacks, and disasters through simple, flexible, and affordable data protection solutions for…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchBoca Raton, United StatesHQ recorded Nov 6, 2026201-500496 contacts →

Exact match

“Arete helps organizations stay ahead of cyber threats with standardized, intelligence-led detection, response, resolution, and resilience capabilities.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchSan Diego, TX, United StatesHQ recorded Nov 6, 2026201-500399 contacts →

Exact match

“Ransomware will come for your business.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchSan Juan, United StatesHQ recorded Nov 6, 20261,001-5,000267 contacts →

Exact match

“GM Sectec is a multi-national organization laser focused on cyber defense, advisory and fraud prevention.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchLondon, United KingdomHQ recorded Nov 6, 2026201-500258 contacts →

Exact match

“Obrela Security Industries is a global provider of cyber security services.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchTel Aviv, IsraelHQ recorded Nov 6, 2026201-500247 contacts →

Exact match

“Sygnia is a cyber technology and services company, providing high-end consulting and incident response support for organizations worldwide.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchMiami, United StatesHQ recorded Nov 6, 202651-200198 contacts →

Exact match

“Global Cyber Certainty Champions, in an uncertain digital world.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchHolmdel, United StatesHQ recorded Nov 6, 202651-200193 contacts →

Exact match

“At Index Engines, we are the experts in Cyber Resiliency, helping organizations build an infrastructure where trusted data is available and reliable.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchSparks, NV, United StatesHQ recorded Nov 6, 202651-200192 contacts →

Exact match

“NAKIVO is a US-based corporation dedicated to delivering the ultimate backup, ransomware protection and disaster recovery solution for virtual, physical, cloud and SaaS…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchRemote, United StatesHQ recorded Nov 6, 2026501-1,000165 contacts →

Exact match

“Prevention-First Cybersecurity Powered by Patented ZeroDwell Containment Xcitium (formerly Comodo Security Solutions) is redefining cybersecurity with a prevention-first approach.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchWest Hartford, CT, United StatesHQ recorded Nov 6, 202651-200163 contacts →

Exact match

“Beazley Security is a global cyber risk management firm committed to helping clients develop true cyber resilience, improving their ability to withstand and recover from any…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchAustin, TX, United StatesHQ recorded Nov 6, 202651-200139 contacts →

Exact match

“Solis is a leading provider of managed cyber security services and cyber incident response.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchJohannesburg, South AfricaHQ recorded Nov 6, 202651-200129 contacts →

Exact match

“Welcome back to the future, MWR CyberSec!”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchMadrid, SpainHQ recorded Nov 6, 202651-200128 contacts →

Exact match

“Empresa de Ciberseguridad soportada en Datos.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchMclean, VA, United StatesHQ recorded Nov 6, 202651-200105 contacts →

Exact match

“Pondurance delivers world-class Managed Detection and Response (MDR) services to organizations facing today's most pressing and dynamic cybersecurity challenges, including…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchMinato-Ku, TaiwanHQ recorded Nov 6, 202651-20093 contacts →

Exact match

“TeamT5 Inc.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchPalo Alto, CA, United StatesHQ recorded Nov 6, 202651-20089 contacts →

Exact match

“Mimic enforces a known-good state across enterprise server environments.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchMuscat, OmanHQ recorded Nov 6, 202651-20088 contacts →

Exact match

“Cybersecurity incidents have increased in frequency and sophistication, and because a breach affects personal and financial information, these incidents become news stories…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchVancouver, CanadaHQ recorded Nov 6, 202651-20087 contacts →

Exact match

“Since 2006, CyberClan has been delivering the peace of mind our clients need to operate with confidence online.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchBurlington, VT, United StatesHQ recorded Nov 6, 202651-20080 contacts →

Exact match

“At Vertek, we deliver advanced cybersecurity solutions that empower businesses to protect their digital assets and achieve peace of mind.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchRemote, United StatesHQ recorded Nov 6, 202611-5077 contacts →

Exact match

“Surefire Cyber delivers swift, strong response to cyber incidents such as ransomware, email compromise, malware, data theft, and other threats with end-to-end response…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchWiener Neustadt, AustriaHQ recorded Nov 6, 202651-20069 contacts →

Exact match

“Data is the lifeline for companies around the world, and if your storage environment isn’t secure or accessible, productivity and reputation will suffer.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchSan Antonio, TX, United StatesHQ recorded Nov 6, 202651-20064 contacts →

Exact match

“CyberFortress is the only platform that covers every phase of cyber resilience, from stopping threats before they land to standing next to you during a full-blown recovery.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchMclean, VA, United StatesHQ recorded Nov 6, 202651-20062 contacts →

Exact match

“MOXFIVE is cybersecurity company helping organizations respond to incidents and minimize the risk of future attacks.”

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

Showing 25 of 545 ransomware defense services worldwide

See the full list, filter by size, metro and specialty, and access 3,856 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Ransomware defense services worldwide at a glance

As of Nov 6, 2026
46.7%Verified-email coverage
15.2Average contacts per company
1-10Median size (employees)
3.1%Largest-city concentration · London
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
308
11-50
163
51-200
57
201-500
6
501-1,000
4
1,001-5,000
2
5,001-10,000
1
10001+
3

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 ransomware defense services are linked below.
What qualifies
Company records worldwide whose business descriptions match “ransomware defense 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 3,856 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.

Ransomware defense services by location

4 lists · largest first

Every Ransomware defense services 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 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 “ransomware defense services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many ransomware defense services are there worldwide?

RevenueBase identified 545 company matches for ransomware defense 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?

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

Which country has the most ransomware defense services?

The United States leads with 161 companies, followed by the United Kingdom (37) and India (27). Every ransomware defense services list by country and city is linked on this page.

Which city has the most ransomware defense services?

London leads with 17 company records, followed by New York (8) and Sao Paulo (7).

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 3,856 professional contacts with verified work emails tracked across these 545 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.