Company lists · Data refreshed November 2026

Top 25 Managed detection and response services based in the United States

Name: Managed detection and response services based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 6, 2026 5,218 companies tracked

RevenueBase identified 5,218 company matches for managed detection and response services associated with the United States as of November 2026 and tracks 141,419 professional contacts across them, including 61,030 with verified work emails. New York is the largest hub.

This list covers company matches for managed detection and response 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

5,218Companies

141,419Contacts tracked

61,030Verified emails

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The 25 largest managed detection and response services based in the United States

Ranked by team size

Top 25 of 5,218 company matches for managed detection and response 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Fortinet	Exact match	Sunnyvale, CA, United StatesHQ recorded Nov 6, 2026	10001+	15,414 contacts →
	Exact match “Fortinet makes possible a digital world that we can always trust through its mission to protect people, devices, and data everywhere.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2	Symantec	Exact match	San Jose, CA, United StatesHQ recorded Nov 6, 2026	10001+	11,878 contacts →
	Exact match “Your backstage pass to the most epic cybersecurity solutions on the market for Endpoint, Network, Data and Cloud security.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3	Trellix	Exact match	Plano, TX, United StatesHQ recorded Nov 6, 2026	1,001-5,000	3,510 contacts →
	Exact match “Trellix is a global cybersecurity company delivering intelligence-led cyber resilience for security-conscious organizations at any stage of their journey.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4	Barracuda	Exact match	Campbell, CA, United StatesHQ recorded Nov 6, 2026	1,001-5,000	2,408 contacts →
	Exact match “Barracuda is a leading global cybersecurity company providing complete protection against complex threats for all size business.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5	OPTIV	Exact match	Leawood, KS, United StatesHQ recorded Nov 6, 2026	1,001-5,000	2,171 contacts →
	Exact match “Optiv is the cyber advisory and solutions leader, delivering strategic and technical expertise to nearly companies across every major industry.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6	Fortra	Exact match	Eden Prairie, MN, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,691 contacts →
	Exact match “Fortra delivers AI-amplified data security solutions that help organizations use and protect data with confidence.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7	Thales Cybersecurity Products	Exact match	Austin, TX, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,413 contacts →
	Exact match “Thales is a global leader in cybersecurity, helping the most trusted organizations in the world protect their most critical applications, data, and identities anywhere at scale.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8	Guidepoint Security	Exact match	Reston, VA, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,346 contacts →
	Exact match “GuidePoint Security provides trusted cybersecurity expertise, solutions, and services that help organizations make informed decisions and minimize risk.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9	Reliaquest	Exact match	Tampa, FL, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,290 contacts →
	Exact match “ReliaQuest exists to Make Security Possible.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10	Imperva	Exact match	Austin, TX, United StatesHQ recorded Nov 6, 2026	10001+	1,192 contacts →
	Exact match “On Dec.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11	Watchguard Technologies	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,174 contacts →
	Exact match “WatchGuard® Technologies, Inc.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12	IT Solutions	Exact match	Fort Washington, PA, United StatesHQ recorded Nov 6, 2026	501-1,000	1,082 contacts →
	Exact match “IT Solutions Technology Partners (ITS) is a trusted managed services provider with 30+ years of experience helping organizations leverage technology as a competitive advantage.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13	Secureworks	Exact match	Atlanta, GA, United StatesHQ recorded Nov 6, 2026	1,001-5,000	911 contacts →
	Exact match “Secureworks, a Sophos Company, empowers organizations worldwide with advanced Managed Detection and Response (MDR) services, our security operations platform Taegis XDR, and…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14	Cyderes	Exact match	Kansas City, MO, United StatesHQ recorded Nov 6, 2026	1,001-5,000	909 contacts →
	Exact match “Cyderes is a global managed cybersecurity services partner dedicated to defending against today’s relentless threatscape.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15	Zerofox	Exact match	Baltimore, VA, United StatesHQ recorded Nov 6, 2026	501-1,000	905 contacts →
	Exact match “ZeroFox is the solution to discover, validate, and disrupt external cyber threats before they harm revenue or reputation.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16	Netenrich	Exact match	San Jose, CA, United StatesHQ recorded Nov 6, 2026	501-1,000	883 contacts →
	Exact match “Netenrich is redefining security operations by shifting the focus from "efficiency"(speed) to "efficacy"(comprehensive coverage).” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17	Huntress	Exact match	Columbia, MD, United StatesHQ recorded Nov 6, 2026	501-1,000	831 contacts →
	Exact match “Protect Your Endpoints, Identities, Logs, and Employees.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18	Levelblue	Exact match	Dallas, TX, United StatesHQ recorded Nov 6, 2026	1,001-5,000	829 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19	TPX	Exact match	Austin, TX, United StatesHQ recorded Nov 6, 2026	1,001-5,000	805 contacts →
	Exact match “TPx is the reliable sidekick every growing business deserves, powering your tech while you take the lead.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20	Coalition, INC	Exact match	San Francisco, CA, United StatesHQ recorded Nov 6, 2026	501-1,000	718 contacts →
	Exact match “Coalition is the world's first Active Insurance provider designed to help prevent digital risk before it strikes.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21	Integris	Exact match	Cranbury Township, NJ, United StatesHQ recorded Nov 6, 2026	501-1,000	685 contacts →
	Exact match “Integris is a national leader in future-ready Managed Services, delivering innovative solutions that drive digital maturity for small and midsize businesses.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22	Telos Corporation	Exact match	Ashburn, VA, United StatesHQ recorded Nov 6, 2026	501-1,000	676 contacts →
	Exact match “Telos Corporation (NASDAQ: TLS) empowers and protects the world’s most security-conscious organizations with efficient, adaptable, and secure solutions that safeguard people…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23	Vectra AI	Exact match	San Jose, CA, United StatesHQ recorded Nov 6, 2026	501-1,000	670 contacts →
	Exact match “Vectra AI is the cybersecurity AI leader in protecting modern networks from modern attacks.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24	Bluevoyant	Exact match	New York, NY, United StatesHQ recorded Nov 6, 2026	501-1,000	668 contacts →
	Exact match “BlueVoyant’s Cyber Defense Platform (CDP) integrates MDR, TPRM, and DRP into a seamless, scalable solution.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25	Vikingcloud	Exact match	Chicago, IL, United StatesHQ recorded Nov 6, 2026	1,001-5,000	665 contacts →
	Exact match “VikingCloud delivers cybersecurity and compliance solutions that simply work.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “managed detection and response services”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 5,218 managed detection and response services based in the United States

See the full list, filter by size, metro and specialty, and access 61,030 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Managed detection and response services based in the United States at a glance

As of Nov 6, 2026

43.2%Verified-email coverage

27.1Average contacts per company

1-10Median size (employees)

3.3%Largest-city concentration · New York

Nov 6, 2026Page data refreshed

Companies by employee count

1-10

2,690

11-50

1,755

51-200

544

201-500

113

501-1,000

1,001-5,000

5,001-10,000

10001+

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 5,218 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 “managed detection and response 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 61,030 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.

Managed detection and response services by metro

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

How many managed detection and response services are there based in the United States?

RevenueBase identified 5,218 company matches for managed detection and response 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?

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

Which city has the most managed detection and response services?

New York leads with 170 company records, followed by Atlanta (92) and Austin (90).

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 61,030 professional contacts with verified work emails tracked across these 5,218 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.

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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.