Company lists · Data refreshed September 2026

Top 25 Ransomware response companies worldwide

RevenueBase identified 603 company matches for ransomware response companies worldwide as of September 2026 and tracks 8,568 professional contacts across them, including 3,664 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for ransomware response 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 September 21, 2026. Country and city lists for ransomware response 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 Sep 21, 2026 How this list was built
603Companies
8,568Contacts tracked
3,664Verified emails
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The 25 largest ransomware response companies worldwide

Ranked by team size
Top 25 of 603 company matches for ransomware response companies worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 21, 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 Sep 21, 2026501-1,000800 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 · Sep 21, 2026 · View company records in RevenueBase
2Exact matchEden Prairie, MN, United StatesHQ recorded Sep 21, 2026501-1,000610 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 · Sep 21, 2026 · View company records in RevenueBase
3Exact matchParis, FranceHQ recorded Sep 21, 202651-200506 contacts →

Exact match

“Founded in 2008, OWN is a Pure Player in cybersecurity, with offices in Paris, Rennes and Toulouse, but with a presence throughout France with its fully remote employees.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
4Exact matchBoca Raton, FL, United StatesHQ recorded Sep 21, 2026201-500462 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 · Sep 21, 2026 · View company records in RevenueBase
5Exact matchSan Diego, CA, United StatesHQ recorded Sep 21, 2026201-500374 contacts →

Exact match

“Ransomware will come for your business.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
6Exact matchTel Aviv, IsraelHQ recorded Sep 21, 2026201-500249 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 · Sep 21, 2026 · View company records in RevenueBase
7Exact matchMiami, FL, United StatesHQ recorded Sep 21, 202651-200178 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
8Exact matchHolmdel, NJ, United StatesHQ recorded Sep 21, 202651-200177 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 · Sep 21, 2026 · View company records in RevenueBase
9Exact matchSparks, NV, United StatesHQ recorded Sep 21, 202651-200174 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 · Sep 21, 2026 · View company records in RevenueBase
10Exact matchRemote, United StatesHQ recorded Sep 21, 2026501-1,000171 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 · Sep 21, 2026 · View company records in RevenueBase
11Exact matchWest Hartford, CT, United StatesHQ recorded Sep 21, 202651-200157 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 · Sep 21, 2026 · View company records in RevenueBase
12Exact matchAustin, TX, United StatesHQ recorded Sep 21, 202651-200137 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
13Exact matchEspoo, FinlandHQ recorded Sep 21, 2026501-1,000127 contacts →

Exact match

“Nixu is now DNV Cyber.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
14Exact matchMinato-Ku, TaiwanHQ recorded Sep 21, 202651-20089 contacts →

Exact match

“TeamT5 Inc.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
15Exact matchBurlington, VT, United StatesHQ recorded Sep 21, 202651-20081 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 · Sep 21, 2026 · View company records in RevenueBase
16Exact matchSwindon, United KingdomHQ recorded Sep 21, 202651-20080 contacts →

Exact match

“When your business relies on security, compliance and a strong reputation for taking care of your customers, you need a partner that understands your ethos, your challenges and…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
17Exact matchMilano, ItalyHQ recorded Sep 21, 202651-20080 contacts →

Exact match

“Itway Cyber Security and Resiliency, parte del Gruppo Itway, supporta le organizzazioni nella protezione degli ambienti digitali e mission-critical, garantendo operatività sicura…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
18Exact matchVancouver, NV, CanadaHQ recorded Sep 21, 202651-20079 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 · Sep 21, 2026 · View company records in RevenueBase
19Exact matchPalo Alto, CA, United StatesHQ recorded Sep 21, 202651-20077 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
20Exact matchRemote, United StatesHQ recorded Sep 21, 202611-5073 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 · Sep 21, 2026 · View company records in RevenueBase
21Exact matchZurich, SwitzerlandHQ recorded Sep 21, 202651-20062 contacts →

Exact match

“Oneconsult has been your Swiss cybersecurity services partner since 2003 and operates independently of any particular products or manufacturers.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
22Exact matchMclean, VA, United StatesHQ recorded Sep 21, 202651-20061 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 · Sep 21, 2026 · View company records in RevenueBase
23Exact matchIrvine, CA, United StatesHQ recorded Sep 21, 202651-20057 contacts →

Exact match

“Alvaka manages and secures the IT infrastructure of mid-market and enterprise-class companies, enabling them to operate seamlessly in the non-stop, mission-critical world that has…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
24Exact matchEdinburgh, United KingdomHQ recorded Sep 21, 2026201-50051 contacts →

Exact match

“We are Adarma, independent leaders in detection and response services.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
25Exact matchSingapore, Hong KongHQ recorded Sep 21, 202611-5050 contacts →

Exact match

“Blackpanda Group is Asia's leading local cyber incident response firm, dedicated to delivering world-class digital emergency response services to businesses in the region.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase

Showing 25 of 603 ransomware response companies worldwide

See the full list, filter by size, metro and specialty, and access 3,664 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Ransomware response companies worldwide at a glance

As of Sep 21, 2026
42.8%Verified-email coverage
14.2Average contacts per company
1-10Median size (employees)
2.7%Largest-city concentration · London
Sep 21, 2026Page data refreshed

Companies by employee count

1-10
323
11-50
205
51-200
56
201-500
10
501-1,000
5
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 response companies are linked below.
What qualifies
Company records worldwide whose business descriptions match “ransomware response 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 3,664 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 September 21, 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 response companies by location

2 lists · largest first

Every Ransomware response companies 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 response companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many ransomware response companies are there worldwide?

RevenueBase identified 603 company matches for ransomware response companies worldwide as of September 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 response companies?

The United States leads with 188 companies, followed by the United Kingdom (31). Every ransomware response companies list by country and city is linked on this page.

Which city has the most ransomware response companies?

London leads with 16 company records, followed by Toronto (10) and Houston (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 3,664 professional contacts with verified work emails tracked across these 603 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 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 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.