Company lists · Data refreshed September 2026

Top 24 IT security consulting firms based in the United States

Name: IT security consulting firms based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 4, 2026 7,692 companies tracked

RevenueBase identified 7,692 company matches for IT security consulting firms associated with the United States as of September 2026 and tracks 79,796 professional contacts across them, including 29,395 with verified work emails and 29,909 with mobile numbers. New York is the largest hub.

This list covers company matches for IT security consulting firms 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 September 4, 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 Sep 4, 2026 How this list was built

7,692Companies

79,796Contacts tracked

29,395Verified emails

29,909Mobile numbers

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The 24 largest IT security consulting firms based in the United States

Ranked by team size

Top 24 of 7,692 company matches for IT security consulting firms based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 4, 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, VA, United StatesHQ recorded Sep 4, 2026	1,001-5,000	2,206 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 · Sep 4, 2026 · View company records in RevenueBase
2	Thales Cybersecurity Products	Exact match	Austin, TX, United StatesHQ recorded Sep 4, 2026	1,001-5,000	1,252 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 · Sep 4, 2026 · View company records in RevenueBase
3	Guidepoint Security	Exact match	Reston, FL, United StatesHQ recorded Sep 4, 2026	1,001-5,000	1,234 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 · Sep 4, 2026 · View company records in RevenueBase
4	PPC	Exact match	Trevose, PA, United StatesHQ recorded Sep 4, 2026	201-500	981 contacts →
	Exact match “PPC is now part of DSA” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
5	Coalfire	Exact match	Chicago, IL, United StatesHQ recorded Sep 4, 2026	1,001-5,000	960 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 · Sep 4, 2026 · View company records in RevenueBase
6	Buchanan Technologies	Exact match	Grapevine, KS, United StatesHQ recorded Sep 4, 2026	501-1,000	817 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 · Sep 4, 2026 · View company records in RevenueBase
7	Telos Corporation	Exact match	Ashburn, NV, United StatesHQ recorded Sep 4, 2026	501-1,000	636 contacts →
	Exact match “Telos empowers and protects the world’s most security-conscious organizations with solutions for continuous security assurance of individuals, systems, and information.” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
8	Vikingcloud	Exact match	Chicago, IL, United StatesHQ recorded Sep 4, 2026	1,001-5,000	618 contacts →
	Exact match “VikingCloud delivers battle-tested cybersecurity and compliance solutions that simply work.” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
9	Ultraviolet Cyber	Exact match	Mclean, AZ, United StatesHQ recorded Sep 4, 2026	501-1,000	517 contacts →
	Exact match “UltraViolet Cyber is the only security operations partner that unifies red, blue, and purple team capabilities into one integrated program.” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
10	Xcelerate Solutions	Exact match	Mclean, VA, United StatesHQ recorded Sep 4, 2026	1,001-5,000	445 contacts →
	Exact match “At Xcelerate, safeguarding the nation isn’t just a mission-it’s our obsession.” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
11	Palo Alto Networks Unit 42	Exact match	Santa Clara, CA, United StatesHQ recorded Sep 4, 2026	5,001-10,000	438 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 · Sep 4, 2026 · View company records in RevenueBase
12	United Security, Inc. USI	Exact match	Red Bank, MA, United StatesHQ recorded Sep 4, 2026	1,001-5,000	409 contacts →
	Exact match “United Security Inc.(USI) provides personalized security solutions enhanced by advanced technology and cyber services.” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
13	Edgewater Federal Solutions, INC	Exact match	Frederick, ID, United StatesHQ recorded Sep 4, 2026	501-1,000	407 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 · Sep 4, 2026 · View company records in RevenueBase
14	IANS	Exact match	Boston, MA, United StatesHQ recorded Sep 4, 2026	51-200	324 contacts →
	Exact match “For the security practitioner caught between rapidly evolving threats and demanding executives, IANS Research is a clear-headed resource for decision-making and articulating risk.” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
15	CTI	Exact match	Timonium, MD, United StatesHQ recorded Sep 4, 2026	n/a	321 contacts →
	Exact match “Continental Technologies Inc (CTI) configures, distributes, designs and maintains technology solutions for customers around the globe and remains both privately-held and locally…” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
16	Intelligent Technical Solutions	Exact match	Las Vegas, WA, United StatesHQ recorded Sep 4, 2026	201-500	313 contacts →
	Exact match “Intelligent Technical Solutions is your trusted business partner for all your Cybersecurity, Managed and Co-managed IT support, Risk & Compliance, Data Analytics, and Consulting…” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
17	Security Risk Advisors	Exact match	Philadelphia, PA, United StatesHQ recorded Sep 4, 2026	201-500	311 contacts →
	Exact match “We deliver cybersecurity consulting, 24x7 operations and SaaS to leading companies in the Financial Services, Healthcare, Pharmaceuticals, Technology and Retail industries.” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
18	Logically	Exact match	Dublin, CT, United StatesHQ recorded Sep 4, 2026	201-500	307 contacts →
	Exact match “Welcome to Logically.” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
19	Cipher A Prosegur Company	Exact match	Miami, FL, United StatesHQ recorded Sep 4, 2026	201-500	294 contacts →
	Exact match “We are Cipher, a company from the Prosegur group specializing in Cybersecurity.” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
20	Feditc	Exact match	Rockville, TX, United StatesHQ recorded Sep 4, 2026	201-500	291 contacts →
	Exact match “Founded in 2003, FEDITC, LLC is an ISO and CMMI level 3 certified cyber security, IT, and engineering services firm.” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
21	Brickred Systems	Exact match	Redmond, WA, United StatesHQ recorded Sep 4, 2026	501-1,000	269 contacts →
	Exact match “BrickRed Systems is Microsoft Gold certified partner also one among the leading Information Technology (IT) Consulting firms of the present generation.” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
22	Prescient Security	Exact match	Nashville, TN, United StatesHQ recorded Sep 4, 2026	201-500	266 contacts →
	Exact match “Prescient Security is a global cybersecurity and compliance firm delivering risk-based audits, advanced penetration testing, and end-to-end framework support.” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
23	Guidepost Solutions	Exact match	New York, AZ, United StatesHQ recorded Sep 4, 2026	201-500	263 contacts →
	Exact match “We stand at the forefront of leadership, insight, and guidance in a world marked by complexity and uncertainty.” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
24	Orion Security Solutions	Exact match	Edmond, OK, United StatesHQ recorded Sep 4, 2026	51-200	251 contacts →
	Exact match “Orion Security Systems (OSS) provides elite technical, physical, and cyber security solutions for customers with simple to complex needs.” Recorded in the RevenueBase company graph · Sep 4, 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 “IT security consulting firms”. 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 24 of 7,692 IT security consulting firms based in the United States

See the full list, filter by size, metro and specialty, and access 29,395 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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IT security consulting firms based in the United States at a glance

As of Sep 4, 2026

36.8%Verified-email coverage

37.5%Mobile-number coverage

10.4Average contacts per company

1-10Median size (employees)

3.3%Largest-city concentration · New York

Sep 4, 2026Page data refreshed

Companies by employee count

1-10

4,653

11-50

2,250

51-200

574

201-500

121

501-1,000

1,001-5,000

5,001-10,000

10001+

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

00–30

2,48931–60

15,83861–90

10,82990–180

239180+

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 “IT security consulting 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. 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 29,395 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 4, 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.

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

How many IT security consulting firms are there based in the United States?

RevenueBase identified 7,692 company matches for IT security consulting firms associated with the United States 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?

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

Which city has the most IT security consulting firms?

New York leads with 257 company records, followed by Houston (148) and Atlanta (139).

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 29,395 professional contacts with verified work emails tracked across these 7,692 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 4, 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.