Company lists · Data refreshed September 2026

Top 23 Data breach response consultants based in New York, United States

RevenueBase identified 77 data breach response consultants headquartered in New York, United States as of September 2026 and tracks 670 professional contacts across them, including 171 with verified work emails. New York is the largest hub.

This list covers data breach response consultants headquartered in New York, United States, 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 19, 2026.

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 19, 2026 86% judged on-target in blind review
77Companies
670Contacts tracked
171Verified emails
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The 23 largest data breach response consultants based in New York, United States

Ranked by team size
Top 23 of 77 data breach response consultants based in New York, United States, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to data breach response consultants: 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceNew York, NY, United StatesHQ checked Sep 19, 2026201-500163 contacts →

Indirect evidence

“Harbor IT helps organizations secure, operate, and scale through integrated IT, cybersecurity, AI, and cloud services.”

Source: RevenueBase Database · checked Sep 19, 2026
2Indirect evidenceNew York, NY, United StatesHQ checked Sep 19, 202651-20076 contacts →

Indirect evidence

“NopalCyber makes cybersecurity manageable, affordable, reliable, and powerful for companies that need to be resilient and compliant.”

Source: RevenueBase Database · checked Sep 19, 2026
3Indirect evidenceNew York, NY, United StatesHQ checked Sep 19, 2026n/a66 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 19, 2026
4Partial evidenceNew York, NY, United StatesHQ checked Sep 19, 202611-5038 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 19, 2026
5Indirect evidenceNew York, United StatesHQ checked Sep 19, 202651-20028 contacts →

Indirect evidence

“CipherTechs is now part of CyberMaxx, a tech-enabled cybersecurity service provider.”

Source: RevenueBase Database · checked Sep 19, 2026
6Indirect evidenceNew York, NY, United StatesHQ checked Sep 19, 202651-20021 contacts →

Indirect evidence

“Gotham Digital Science (GDS) was acquired in 2016 by Stroz Friedberg, an Aon company.”

Source: RevenueBase Database · checked Sep 19, 2026
7Indirect evidenceNew York, NY, United StatesHQ checked Sep 19, 2026201-50019 contacts →

Indirect evidence

“ACA Aponix, a division of ACA Group, provides cybersecurity and technology risk assessments, vendor and M&A diligence services, network testing, and advisory services.”

Source: RevenueBase Database · checked Sep 19, 2026
8Partial evidenceNew York, NY, United StatesHQ checked Sep 19, 202611-5016 contacts →

Partial evidence

“LIFARS, a SecurityScorecard Company is a global leader in Incident Response, Digital Forensics, Ransomware Mitigation, and Cyber Resiliency services.”

Source: RevenueBase Database · checked Sep 19, 2026
9Strong evidenceNew York, United StatesHQ checked Sep 19, 202611-5011 contacts →

Strong evidence

“Octillo is one of the few law firms in the country focused exclusively on data security and privacy, incident response, and litigation.”

Source: RevenueBase Database · checked Sep 19, 2026
10Partial evidenceNew York, NY, United StatesHQ checked Sep 19, 202611-5011 contacts →

Partial evidence

“Top notch services at reasonable cost RGS Global Advisors has a wealth of internal audit, FDICIA and SOX testing, remediation, consultancy, BSA/AML/OFAC, IT/IS/Cybersecurity &…”

Source: RevenueBase Database · checked Sep 19, 2026
11Indirect evidenceNew York, United StatesHQ checked Sep 19, 202611-508 contacts →

Indirect evidence

“Sayfer, where people and technology meet to overcome web3 and blockchain challenges.”

Source: RevenueBase Database · checked Sep 19, 2026
12Indirect evidenceNew York, NY, United StatesHQ checked Sep 19, 20261-105 contacts →

Indirect evidence

“Kopidion consists of highly qualified cyber operations and information security professionals.”

Source: RevenueBase Database · checked Sep 19, 2026
13Indirect evidenceNew York, NY, United StatesHQ checked Sep 19, 202611-505 contacts →

Indirect evidence

“Most organizations face growing compliance demands but lack an IT partner who truly understands them.”

Source: RevenueBase Database · checked Sep 19, 2026
14Indirect evidenceNew York, NY, United StatesHQ checked Sep 19, 202611-504 contacts →

Indirect evidence

“ParanoidLab is a Cyber Threat Intelligence service designed for MSSPs, SOCs, and IT Security providers focused on expanding their security services and boosting revenue.”

Source: RevenueBase Database · checked Sep 19, 2026
15Indirect evidenceNew York, United StatesHQ checked Sep 19, 202611-504 contacts →

Indirect evidence

“Velstadt is a cybersecurity provider focused on delivering both offensive and defensive security services.”

Source: RevenueBase Database · checked Sep 19, 2026
16Indirect evidenceNew York, NY, United StatesHQ checked Sep 19, 20261-104 contacts →

Indirect evidence

“Bytium LLC is a U.S-registered cybersecurity and IT solutions firm dedicated to helping organizations protect their information assets and maintain operational resilience.”

Source: RevenueBase Database · checked Sep 19, 2026
17Indirect evidenceNew York, NY, United StatesHQ checked Sep 19, 20261-103 contacts →

Indirect evidence

“SecReliant is managed by a seasoned team – with backgrounds in cybersecurity, technology, blockchain enabled technology, and service in the armed forces – that is passionate…”

Source: RevenueBase Database · checked Sep 19, 2026
18Indirect evidenceNew York, NY, United StatesHQ checked Sep 19, 20261-103 contacts →

Indirect evidence

“BrothersKeep is a boutique cybersecurity services firm with offices in New York and Israel, providing a full portfolio of enterprise-class cybersecurity solutions to businesses of…”

Source: RevenueBase Database · checked Sep 19, 2026
19Partial evidenceNew York, United StatesHQ checked Sep 19, 202651-2002 contacts →

Partial evidence

“d-RiskCyber is a global consulting firm headquartered in New York City and specializing in cybersecurity-by-design and data-protection-by-design solutions.”

Source: RevenueBase Database · checked Sep 19, 2026
20Indirect evidenceNew York, NY, United StatesHQ checked Sep 19, 202611-502 contacts →

Indirect evidence

“Serving all fifty states, ESM Global Consulting’s Mission is to redefine the IT and security consulting industry by offering an uncommon blend of technology and business resources…”

Source: RevenueBase Database · checked Sep 19, 2026
21Indirect evidenceNew York, NY, United StatesHQ checked Sep 19, 202651-2001 contacts →

Indirect evidence

“Technology Transformation Public / Private / Hybrid Cloud Architecture IAM / CIAM Cyber Maturity Assessment Cyber Strategy and Target Operating Model Development Security Risk…”

Source: RevenueBase Database · checked Sep 19, 2026
22Indirect evidenceNew York, NY, United StatesHQ checked Sep 19, 20261-101 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 19, 2026
23Partial evidenceNew York, United StatesHQ checked Sep 19, 20261-101 contacts →

Partial evidence

“Cybersecurity & Data Privacy Compliance Solutions Expert Consulting Services for your technology-driven business world.”

Source: RevenueBase Database · checked Sep 19, 2026

Showing 23 of 77 data breach response consultants based in New York, United States

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Data breach response consultants based in New York, United States at a glance

As of Sep 19, 2026
25.5%Verified-email coverage
8.7Average contacts per company
1-10Median size (employees)
100.0%Largest-city concentration · New York
Sep 19, 2026Page data refreshed

Companies by employee count

1-10
41
11-50
23
51-200
8
201-500
4
1,001-5,000
1

Email recency for this list is measured across the whole United States list rather than for New York, so it is reported there. Company counts and contact totals on this page are exact for New York, over 77 companies.

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 data breach response consultants, 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.
What qualifies
Companies headquartered in New York, United States whose own description of what they do matches “data breach response consultants”. 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 data breach response consultants), 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 data breach response consultants, and records with no verified work email. Companies headquartered outside New York are excluded even when they keep an office there.
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, 171 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 19, 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.

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 data breach response consultants, 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 data breach response consultants are there based in New York, United States?

RevenueBase identified 77 data breach response consultants headquartered in New York, United States 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?

Harbor IT, headquartered in New York, tops this list with the largest team on record.

Which city has the most data breach response consultants?

New York leads with 77 headquartered companies, followed by Atlanta (70) and Washington (57).

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 171 verified decision-maker contacts tracked across these 77 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 19, 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.