Company lists · Data refreshed November 2026

Top 25 Information security consulting services based in the United States

Name: Information security consulting 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 11,749 companies tracked

RevenueBase identified 11,749 company matches for information security consulting services associated with the United States as of November 2026 and tracks 140,728 professional contacts across them, including 50,586 with verified work emails. New York is the largest hub.

This list covers company matches for information security consulting 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

11,749Companies

140,728Contacts tracked

50,586Verified emails

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The 25 largest information security consulting services based in the United States

Ranked by team size

Top 25 of 11,749 company matches for information security consulting 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	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
2	Eplus INC	Exact match	Herndon, VA, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,901 contacts →
	Exact match “ePlus is a customer-first, services-led, results-driven and trusted industry leader that helps organizations secure, modernize, optimize, and scale every aspect of their IT…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3	Trace3	Exact match	Irvine, MI, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,431 contacts →
	Exact match “Trace3 delivers business transformation.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4	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
5	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
6	Titan Security Group	Exact match	Chicago, IL, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,209 contacts →
	Exact match “At Titan Security Group, we understand that each client is unique, with specific security needs shaped by the type of property and its location.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7	Brosnan Risk Consultants	Exact match	Pearl River, CA, United StatesHQ recorded Nov 6, 2026	5,001-10,000	1,080 contacts →
	Exact match “Brosnan Risk Consultants, Ltd.(BRC) is a security risk management firm focusing on physical security, emergency security, disaster preparedness and recovery and management…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8	Synoptek	Exact match	Costa Mesa, CA, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,062 contacts →
	Exact match “Synoptek is a leading global managed services provider and technology consulting firm that delivers transformative business results.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9	PPC	Exact match	Trevose, PA, United StatesHQ recorded Nov 6, 2026	201-500	1,017 contacts →
	Exact match “PPC is now part of DSA” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10	Coalfire	Exact match	Chicago, GA, United StatesHQ recorded Nov 6, 2026	1,001-5,000	977 contacts →
	Exact match “Coalfire is the premier Cybersecurity and Compliance Services leader for the tech, healthcare, and finance industries.(This page is maintained by Marketing.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11	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
12	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
13	Buchanan Technologies	Exact match	Grapevine, TX, United StatesHQ recorded Nov 6, 2026	501-1,000	806 contacts →
	Exact match “As a leading IT consulting and outsourcing services firm, Buchanan Technologies helps organizations across North America turn their business technology into a powerful competitive…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14	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
15	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
16	Network Intelligence	Exact match	Plano, TX, United StatesHQ recorded Nov 6, 2026	501-1,000	658 contacts →
	Exact match “At Network Intelligence, we combine our team of 500+ security professionals with Transilience – our cutting-edge AI platform.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17	Planned Systems International	Exact match	Columbia, VA, United StatesHQ recorded Nov 6, 2026	1,001-5,000	638 contacts →
	Exact match “Since 1988, PSI teams have provided our government customers with innovative, cost effective solutions that solve today’s complex challenges, improve operational efficiencies, and…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18	Solomonedwards	Exact match	Wayne, PA, United StatesHQ recorded Nov 6, 2026	1,001-5,000	633 contacts →
	Exact match “For more than 25 years, SolomonEdwards has empowered organizations to tackle common and complex business challenges through strategic advisory, technical advocacy, and hands-on…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19	Ultraviolet Cyber	Exact match	Mclean, AZ, United StatesHQ recorded Nov 6, 2026	501-1,000	623 contacts →
	Exact match “UltraViolet Cyber is the only security operations partner that unifies red, blue, and purple team capabilities into one integrated program, finding what's vulnerable, stopping…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20	Security Alliance	Exact match	Miami, FL, United StatesHQ recorded Nov 6, 2026	1,001-5,000	585 contacts →
	Exact match “Security Alliance is a highly experienced provider of security solutions for private and business environments.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21	Blue Mantis	Exact match	Portsmouth, MA, United StatesHQ recorded Nov 6, 2026	201-500	552 contacts →
	Exact match “Blue Mantis is a security-first, IT solutions and services provider with a 30+ year history of successfully helping clients achieve business modernization by applying…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22	Palo Alto Networks Unit 42	Exact match	Santa Clara, CA, United StatesHQ recorded Nov 6, 2026	5,001-10,000	510 contacts →
	Exact match “Palo Alto Networks Unit 42 brings together world-renowned threat researchers with an elite team of incident responders and security consultants to create an intelligence-driven…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23	XTIUM	Exact match	New York, PA, United StatesHQ recorded Nov 6, 2026	501-1,000	482 contacts →
	Exact match “XTIUM, created through the business combination of ATSG and Evolve IP, delivers a modern security-first approach to the managed IT services experience.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24	Meriplex	Exact match	Houston, TX, United StatesHQ recorded Nov 6, 2026	501-1,000	476 contacts →
	Exact match “If you’re a midsize enterprise with employees (i.e, an “MSE” according to Gartner), we know what you’re going through.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25	Edgewater Federal Solutions, INC	Exact match	Frederick, ID, United StatesHQ recorded Nov 6, 2026	501-1,000	468 contacts →
	Exact match “Edgewater Federal Solutions was founded in 2002 with the mission of being the best IT consulting company possible for our government clients, our contracting partners and our…” 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 “information security consulting 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 11,749 information security consulting services based in the United States

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Information security consulting services based in the United States at a glance

As of Nov 6, 2026

35.9%Verified-email coverage

12.0Average 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

7,139

11-50

3,365

51-200

908

201-500

198

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 11,749 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 “information security consulting 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 50,586 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.

Information security consulting 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 “information security consulting services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many information security consulting services are there based in the United States?

RevenueBase identified 11,749 company matches for information security consulting 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?

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

Which city has the most information security consulting services?

New York leads with 382 company records, followed by Houston (228) and Atlanta (209).

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 50,586 professional contacts with verified work emails tracked across these 11,749 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.