Company lists · Data refreshed November 2026

Top 25 Incident response retainer services based in the United States

RevenueBase identified 129 company matches for incident response retainer services associated with the United States as of November 2026 and tracks 1,429 professional contacts across them, including 515 with verified work emails. Chicago is the largest hub.

This list covers company matches for incident response retainer services associated with the United States, 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.

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
129Companies
1,429Contacts tracked
515Verified emails
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The 25 largest incident response retainer services based in the United States

Ranked by team size
Top 25 of 129 company matches for incident response retainer services based in the United States, 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 matchScottsdale, AZ, United StatesHQ recorded Nov 6, 202651-200243 contacts →

Exact match

“Lumifi Cyber helps organizations illuminate their cyber defense with continuous protection across the full security lifecycle.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact 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
3Exact matchAustin, TX, United StatesHQ recorded Nov 6, 20261,001-5,00082 contacts →

Exact match

“NorthStar, a wholly owned subsidiary of NorthStar Group Holdings, LLC, has over 40 years of experience providing emergency preparedness and remediation services in retail…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact 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
5Exact 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
6Exact matchReston, VA, United StatesHQ recorded Nov 6, 202651-20046 contacts →

Exact match

“Volexity is a leading provider of threat intelligence and incident suppression services and solutions based in the Washington, DC area.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchSt. Paul, MN, United StatesHQ recorded Nov 6, 202611-5044 contacts →

Exact match

“Blue Team Alpha, An Elite Cybersecurity Force.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchPatchogue, FL, United StatesHQ recorded Nov 6, 202611-5033 contacts →

Exact match

“Infinitesol helps organizations make the right decisions in the first critical minutes of a cyber incident.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchFairlawn, OH, United StatesHQ recorded Nov 6, 202651-20029 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchChicago, IL, United StatesHQ recorded Nov 6, 202611-5025 contacts →

Exact match

“DigitalMint Cyber is a globally trusted leader in ransomware incident response, providing end-to-end support for organizations facing cyber extortion.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchPleasanton, CA, United StatesHQ recorded Nov 6, 202611-5024 contacts →

Exact match

“AccessQuint (AQ) focuses on empowering businesses and organizations with the knowledge and tools required to Identify, Detect, Respond, Recover, and Protect from today's Cyber…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchNew York, NY, United StatesHQ recorded Nov 6, 202611-5016 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchPhoenix, AZ, United StatesHQ recorded Nov 6, 202611-5016 contacts →

Exact match

“IT that Hustles”.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchBrighton, MI, United StatesHQ recorded Nov 6, 202651-20016 contacts →

Exact match

“XO Cyber is a next-generation cybersecurity firm built by practitioners, for practitioners.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchSterling, VA, United StatesHQ recorded Nov 6, 202651-20014 contacts →

Exact match

“AZ Cyber Security Solutions is a full-service cyber security firm, dedicated to providing first-rate, world class cyber security solutions.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchMobile, IA, United StatesHQ recorded Nov 6, 202651-20012 contacts →

Exact match

“We are a team of safety, fire/rescue, emergency medical, and law enforcement professionals committed to provide our clients with the peace of mind and stability they seek when it…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchPeabody, MA, United StatesHQ recorded Nov 6, 20261-1010 contacts →

Exact match

“At Sandra Network, we understand the challenges businesses face when it comes to managing their IT infrastructure and cybersecurity.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchFresno, NY, United StatesHQ recorded Nov 6, 202651-20010 contacts →

Exact match

“Founded in 2015, Breadcrumb has grown into a 100+ person national DFIR team with in-house digital forensic labs, 24/7 SOC operations, and clients spanning healthcare, defense…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchNewport Beach, CA, United StatesHQ recorded Nov 6, 202651-20010 contacts →

Exact match

“Cybersecurity Firm - Digital Forensics, Incident Response, Data Breach Investigations, PEN Testing, MDR Services, Compliance, Assessments, PCI, QSA, PFI Intersec Worldwide is an…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchSalt Lake City, UT, United StatesHQ recorded Nov 6, 202611-509 contacts →

Exact match

“When you’re under digital assault, you don’t want your cybersecurity provider to send you a notification - you want immediate action.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchAshburn, VA, United StatesHQ recorded Nov 6, 202611-508 contacts →

Exact match

“Secure Anchor Consulting provides high-touch cybersecurity services that help organizations prevent security breaches, detect network intrusions, and respond to advanced threats.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchLewisburg, NC, United StatesHQ recorded Nov 6, 202611-508 contacts →

Exact match

“Born in the world of Incident Response, Vendetta Cyber Defense was founded with one goal in mind.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchHillsboro, OR, United StatesHQ recorded Nov 6, 202611-508 contacts →

Exact match

“Lockard is a cybersecurity firm protecting businesses from cyber threats & ransomware attacks.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchChicago, IL, United StatesHQ recorded Nov 6, 202611-508 contacts →

Exact match

“Data Defenders is at the forefront of Managed Cybersecurity Operations Providers (MCOP), specializing in safeguarding municipalities through our exclusive Regional Security…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchGreenville, SC, United StatesHQ recorded Nov 6, 20261-107 contacts →

Exact match

“Offering Managed IT and Cybersecurity services to businesses throughout the US.”

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

Showing 25 of 129 incident response retainer services based in the United States

See the full list, filter by size, metro and specialty, and access 515 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Incident response retainer services based in the United States at a glance

As of Nov 6, 2026
36.0%Verified-email coverage
11.1Average contacts per company
1-10Median size (employees)
3.9%Largest-city concentration · Chicago
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
70
11-50
43
51-200
14
201-500
1
1,001-5,000
1

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 129 companies.

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.
What qualifies
Company records associated with the United States whose business descriptions match “incident response retainer 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. Where headquarters information is recorded, preview rows are also filtered to this page’s location. 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 515 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.

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 “incident response retainer services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many incident response retainer services are there based in the United States?

RevenueBase identified 129 company matches for incident response retainer services associated with the United States 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?

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

Which city has the most incident response retainer services?

Chicago leads with 5 company records, followed by Los Angeles (3) and New York (3).

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 515 professional contacts with verified work emails tracked across these 129 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.

Ready to reach these companies? Verified emails and direct dials for all 129 incident response retainer services based in the United States. Start with a free account, no credit card.

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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.