Company lists · Data refreshed September 2026

Top 25 Data breach response law firms worldwide

RevenueBase identified 966 company matches for data breach response law firms worldwide as of September 2026 and tracks 6,932 professional contacts across them, including 2,667 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers company matches for data breach response law firms 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 28, 2026. Country and city lists for data breach response law firms 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 28, 2026 How this list was built
966Companies
6,932Contacts tracked
2,667Verified emails
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The 25 largest data breach response law firms worldwide

Ranked by team size
Top 25 of 966 company matches for data breach response law firms worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 28, 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 matchParis, FranceHQ recorded Sep 28, 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 28, 2026 · View company records in RevenueBase
2Exact matchBoca Raton, FL, United StatesHQ recorded Sep 28, 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 28, 2026 · View company records in RevenueBase
3Exact matchDevon, PA, United StatesHQ recorded Sep 28, 2026201-500213 contacts →

Exact match

“Founded by John F.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
4Exact matchSão Paulo, BrazilHQ recorded Sep 28, 202651-200183 contacts →

Exact match

“Somos o parceiro estratégico em Direito Digital que transforma tendências em novas possibilidades, alavancando empresas em direção ao futuro e transformando realidades – das…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
5Exact matchMadrid, SpainHQ recorded Sep 28, 202651-200183 contacts →

Exact match

“Expertos en Ciberseguridad, Privacidad, GRC, IRM y Cumplimiento Normativo unificando la perspectiva Legal y Tecnológica GOVERTIS es la mayor firma de Advisory 100% especializada…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
6Exact matchAustin, TX, United StatesHQ recorded Sep 28, 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 28, 2026 · View company records in RevenueBase
7Exact matchSt Petersburg, FL, RussiaHQ recorded Sep 28, 202651-200130 contacts →

Exact match

“360 Advanced is a relationship-focused cybersecurity and compliance firm offering security, privacy and compliance-oriented solutions customized to meet your organization and your…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
8Exact matchChantilly, VA, United StatesHQ recorded Sep 28, 202651-200111 contacts →

Exact match

“Redgrave is the leading law firm addressing legal discovery, information governance, AI governance, data security, and other Information Law challenges for corporations and…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
9Exact matchNew Delhi, IndiaHQ recorded Sep 28, 202611-5081 contacts →

Exact match

“Scriboard™ is a full service law firm with cutting edge specialisation in Information Technology, Information Security, Data Privacy, Intellectual Property and related legal…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
10Exact matchSwindon, United KingdomHQ recorded Sep 28, 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 28, 2026 · View company records in RevenueBase
11Exact matchWashington, DC, United StatesHQ recorded Sep 28, 202651-20072 contacts →

Exact match

“ZwillGen is a boutique law firm specializing in technology and privacy law.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
12Exact matchMilan, ItalyHQ recorded Sep 28, 202651-20068 contacts →

Exact match

“ICTLC offers strategic support in legal and cybersecurity compliance (Privacy, IP, TMT) and governance, organisation, management and control models for your data-driven…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
13Exact matchTampa, FL, United StatesHQ recorded Sep 28, 2026201-50066 contacts →

Exact match

“Focal Point Data Risk is now a CDW company!”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
14Exact matchSan Francisco, CA, United StatesHQ recorded Sep 28, 202611-5062 contacts →

Exact match

“Atheria Law provides legal services to insurance and reinsurance clients, focusing on the technology, privacy and cyber, and professional liability sectors.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
15Exact matchWashington, DC, United StatesHQ recorded Sep 28, 202611-5058 contacts →

Exact match

“iDS is a strategic consulting, technology, and expert services firm.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
16Exact matchSao Paulo, BrazilHQ recorded Sep 28, 202651-20054 contacts →

Exact match

“Com 21 anos de atividade, O Peck Advogados foi fundado impulsionado pela tecnologia para modernizar todas as frentes do direito.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
17Exact matchNew York, United StatesHQ recorded Sep 28, 202611-5046 contacts →

Exact match

“Founded in 2008, with operations in New York, London and Toronto, Bortstein Legal Group is a noted leader in the areas of technology, market data, digital content, privacy…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
18Exact matchMilano, ItalyHQ recorded Sep 28, 202611-5045 contacts →

Exact match

“RAD nasce dalla volontà di realizzare un nuovo progetto d’impresa focalizzato sul crescente tema della sicurezza informatica con particolare caratterizzazione negli ambiti: Cyber…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
19Exact matchBandar Seri Begawan, Brunei DarussalamHQ recorded Sep 28, 202651-20042 contacts →

Exact match

“ITPSS Sdn Bhd offers various specialised information security and cyber security services including Incident Response and Handling, Managed Security Services (MSS), Penetration…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
20Exact matchHamburg, GermanyHQ recorded Sep 28, 202651-20040 contacts →

Exact match

“BDO Cyber Security GmbH is your competent partner in all in all cyber security matters.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
21Exact matchNew York, NY, United StatesHQ recorded Sep 28, 202611-5038 contacts →

Exact match

“Founded in 2011, Proven Data has consistently evolved to meet the growing needs of our clients.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
22Exact matchCologne, GermanyHQ recorded Sep 28, 202651-20037 contacts →

Exact match

“KINAST Rechtsanwälte is a law practice company based in Cologne, North Rhine-Westphalia, Germany.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
23Exact matchHyderabad, IndiaHQ recorded Sep 28, 202651-20037 contacts →

Exact match

“ESF Labs, established in 2014, is a leading provider of digital forensics and cybersecurity services, specializing in helping organizations navigate the complex and rapidly…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
24Exact matchRishon Lezion, IsraelHQ recorded Sep 28, 202611-5035 contacts →

Exact match

“Established in 2014 to defend global enterprises from the increasing challenges of organizational cybersecurity.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
25Exact matchBerkeley, CA, United StatesHQ recorded Sep 28, 202651-20034 contacts →

Exact match

“Kivu Consulting, part of Quorum Cyber, combines technical and legal expertise to deliver world-class investigative, discovery, and forensic solutions globally.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase

Showing 25 of 966 data breach response law firms worldwide

See the full list, filter by size, metro and specialty, and access 2,667 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Data breach response law firms worldwide at a glance

As of Sep 28, 2026
38.5%Verified-email coverage
7.2Average contacts per company
1-10Median size (employees)
2.9%Largest-city concentration · Sao Paulo
Sep 28, 2026Page data refreshed

Companies by employee count

1-10
683
11-50
234
51-200
39
201-500
7
501-1,000
1
10001+
1

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 data breach response law firms are linked below.
What qualifies
Company records worldwide whose business descriptions match “data breach response law firms” 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 2,667 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 28, 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.

Data breach response law firms by location

8 lists · largest first

Every Data breach response law firms 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 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 “data breach response law firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many data breach response law firms are there worldwide?

RevenueBase identified 966 company matches for data breach response law firms 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?

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

Which country has the most data breach response law firms?

The United States leads with 248 companies, followed by Brazil (74) and Spain (54). Every data breach response law firms list by country and city is linked on this page.

Which city has the most data breach response law firms?

Sao Paulo leads with 28 company records, followed by Paris (27) and London (23).

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 2,667 professional contacts with verified work emails tracked across these 966 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 28, 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.