Company lists · Data refreshed September 2026
Top 25 Ransomware response consultancies worldwide
RevenueBase identified 347 ransomware response consultancies worldwide as of September 2026 and tracks 5,745 professional contacts across them, including 2,903 with verified work emails. The United States is the largest market and London the largest hub.
This list covers ransomware response consultancies 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 29, 2026. Country and city lists for ransomware response consultancies 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.
The 25 largest ransomware response consultancies worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 800 contacts → | ||||
Partial evidence “Illumio is the leader in ransomware and breach containment, redefining how organizations contain cyberattacks and enable operational resilience.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 2 | 610 contacts → | ||||
Partial evidence “Arcserve, the pioneer in unified data resilience, protects data from ransomware, cyberattacks, and disasters through simple, flexible, and affordable data protection solutions for…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 3 | 462 contacts → | ||||
Partial evidence “Arete helps organizations stay ahead of cyber threats with standardized, intelligence-led detection, response, resolution, and resilience capabilities.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 4 | 374 contacts → | ||||
Partial evidence “Ransomware will come for your business.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 5 | 249 contacts → | ||||
Partial evidence “Sygnia is a cyber technology and services company, providing high-end consulting and incident response support for organizations worldwide.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 6 | 178 contacts → | ||||
Indirect evidence “Global Cyber Certainty Champions, in an uncertain digital world.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 7 | 177 contacts → | ||||
Indirect evidence “At Index Engines, we are the experts in Cyber Resiliency, helping organizations build an infrastructure where trusted data is available and reliable.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 8 | 171 contacts → | ||||
Indirect evidence “Prevention-First Cybersecurity Powered by Patented ZeroDwell Containment Xcitium (formerly Comodo Security Solutions) is redefining cybersecurity with a prevention-first approach.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 9 | 157 contacts → | ||||
Indirect evidence “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…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 10 | 137 contacts → | ||||
Partial evidence “Solis is a leading provider of managed cyber security services and cyber incident response.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 11 | 89 contacts → | ||||
Indirect evidence “TeamT5 Inc.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 12 | 81 contacts → | ||||
Indirect evidence “At Vertek, we deliver advanced cybersecurity solutions that empower businesses to protect their digital assets and achieve peace of mind.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 13 | 79 contacts → | ||||
Indirect evidence “Since 2006, CyberClan has been delivering the peace of mind our clients need to operate with confidence online.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 14 | 77 contacts → | ||||
Indirect evidence “Mimic enforces a known-good state across enterprise server environments.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 15 | 73 contacts → | ||||
Strong evidence “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…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 16 | 57 contacts → | ||||
Indirect evidence “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…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 17 | 55 contacts → | ||||
Indirect evidence “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.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 18 | 50 contacts → | ||||
Partial evidence “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.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 19 | 50 contacts → | ||||
Partial evidence “When a ransomware attack succeeds, your storage and backups are the last line of defense.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 20 | 48 contacts → | ||||
Partial evidence “Airiam provides businesses with extensive enterprise-grade cybersecurity and IT services backed by Airiam’s ransomware recovery guarantee.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 21 | 42 contacts → | ||||
Partial evidence “ITPSS Sdn Bhd offers various specialised information security and cyber security services including Incident Response and Handling, Managed Security Services (MSS), Penetration…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 22 | 41 contacts → | ||||
Partial evidence “Elastio proves ransomware recovery and ROI by validating data and backups, cutting downtime, removing ransom leverage, and making recovery risk measurable and insurable.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 23 | 38 contacts → | ||||
Partial evidence “At BullWall, we fight the impact of ransomware worldwide.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 24 | 38 contacts → | ||||
Indirect evidence “Founded in 2011, Proven Data has consistently evolved to meet the growing needs of our clients.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 25 | 37 contacts → | ||||
Partial evidence “ConnectOn is a leading Managed Service, Security Service Provider, and Ransomware Remediation Company committed to helping companies around the globe maintain peak business…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
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: ransomware response consultancies. 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 ransomware response consultancies.
- Partial evidence
- Its own public description names part of ransomware response consultancies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name ransomware response consultancies. 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.
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Ransomware response consultancies worldwide at a glance
As of Sep 29, 2026Companies by employee count
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 ransomware response consultancies, 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 ransomware response consultancies are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “ransomware response consultancies”. 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 ransomware response consultancies), 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 ransomware response consultancies, 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, 2,903 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 29, 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.
Ransomware response consultancies by location
1 lists · largest firstEvery Ransomware response consultancies 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 ransomware response consultancies, 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 ransomware response consultancies are there worldwide?
RevenueBase identified 347 ransomware response consultancies 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?
Illumio, headquartered in Sunnyvale, tops this list with the largest team on record.
Which country has the most ransomware response consultancies?
The United States leads with 126 companies. Every ransomware response consultancies list by country and city is linked on this page.
Which city has the most ransomware response consultancies?
London leads with 12 headquartered companies, followed by New York (6) and Toronto (6).
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 2,903 verified decision-maker contacts tracked across these 347 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 29, 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.