Company lists · Data refreshed November 2026

Top 25 Ciso services based in the United States

RevenueBase identified 12,146 company matches for ciso services associated with the United States as of November 2026 and tracks 271,943 professional contacts across them, including 98,150 with verified work emails. New York is the largest hub.

This list covers company matches for ciso 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
12,146Companies
271,943Contacts tracked
98,150Verified emails
Explore this list → Free signup · no credit card · 500 free credits

The 25 largest ciso services based in the United States

Ranked by team size
Top 25 of 12,146 company matches for ciso 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 matchAshburn, VA, United StatesHQ recorded Nov 6, 202610001+86,844 contacts →

Exact match

“DXC Technology helps global companies run their mission-critical systems and operations while modernizing IT, optimizing data architectures, and ensuring security and scalability…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchArlington, VA, United StatesHQ recorded Nov 6, 20261,001-5,0003,071 contacts →

Exact match

“GTT is a leading networking and security as a service provider for multinational organizations, simply and securely connecting people and machines to data and applications –…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchLeawood, KS, United StatesHQ recorded Nov 6, 20261,001-5,0002,171 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
4Exact matchHerndon, VA, United StatesHQ recorded Nov 6, 20261,001-5,0001,901 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
5Exact matchSanta Clara, CA, United StatesHQ recorded Nov 6, 20261,001-5,0001,768 contacts →

Exact match

“TAO Digital Solutions empowers businesses to excel with innovative technological capabilities and forward-thinking strategies.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchIrvine, MI, United StatesHQ recorded Nov 6, 20261,001-5,0001,431 contacts →

Exact match

“Trace3 delivers business transformation.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchAustin, TX, United StatesHQ recorded Nov 6, 20261,001-5,0001,413 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
8Exact matchHollywood, MA, United StatesHQ recorded Nov 6, 20261,001-5,0001,402 contacts →

Exact match

“SMX is a global technology and advanced engineering provider specializing in Cloud Solutions, C5ISR, and Advanced Engineering / IT.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchReston, VA, United StatesHQ recorded Nov 6, 20261,001-5,0001,346 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
10Exact matchBrea, GA, United StatesHQ recorded Nov 6, 20261,001-5,0001,151 contacts →

Exact match

“Technology only matters when it helps the business run better.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchFort Washington, PA, United StatesHQ recorded Nov 6, 2026501-1,0001,082 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
12Exact matchDallas, TX, United StatesHQ recorded Nov 6, 2026501-1,0001,072 contacts →

Exact match

“As an award-winning, global IT solutions provider, we are changing the nature of transformation.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchCosta Mesa, CA, United StatesHQ recorded Nov 6, 20261,001-5,0001,062 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
14Exact matchTrevose, PA, United StatesHQ recorded Nov 6, 2026201-5001,017 contacts →

Exact match

“PPC is now part of DSA”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchChicago, GA, United StatesHQ recorded Nov 6, 20261,001-5,000977 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
16Exact matchTampa, FL, United StatesHQ recorded Nov 6, 2026501-1,000896 contacts →

Exact match

“A-LIGN is the leading provider of high-quality, efficient cybersecurity compliance programs.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchSt. Louis, MO, United StatesHQ recorded Nov 6, 2026201-500876 contacts →

Exact match

“Systems Service Enterprises, Inc.(SSE) is a leader in Information Technology, Cybersecurity Compliance, and Training and Technical Data solutions for small-medium sized businesses…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchDallas, TX, United StatesHQ recorded Nov 6, 20261,001-5,000829 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchGrapevine, TX, United StatesHQ recorded Nov 6, 2026501-1,000806 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
20Exact matchAustin, TX, United StatesHQ recorded Nov 6, 20261,001-5,000805 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
21Exact matchFairfax, VA, United StatesHQ recorded Nov 6, 20261,001-5,000744 contacts →

Exact match

“MAG is a leader in delivering Command, Control, Communication, Computers, Cyber, Intelligence, Surveillance and Reconnaissance (C5ISR) services at the tactical edge with premier…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchAlpharetta, TX, United StatesHQ recorded Nov 6, 2026501-1,000714 contacts →

Exact match

“Customers of all sizes globally rely on Simeio to help secure their organizations.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchCranbury Township, NJ, United StatesHQ recorded Nov 6, 2026501-1,000685 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
24Exact matchAshburn, VA, United StatesHQ recorded Nov 6, 2026501-1,000676 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
25Exact matchChicago, IL, United StatesHQ recorded Nov 6, 20261,001-5,000665 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

Showing 25 of 12,146 ciso services based in the United States

See the full list, filter by size, metro and specialty, and access 98,150 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Ciso services based in the United States at a glance

As of Nov 6, 2026
36.1%Verified-email coverage
22.4Average contacts per company
1-10Median size (employees)
2.9%Largest-city concentration · New York
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
6,877
11-50
3,833
51-200
1,040
201-500
207
501-1,000
75
1,001-5,000
58
5,001-10,000
5
10001+
12

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 12,146 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 “ciso 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 98,150 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.

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

How many ciso services are there based in the United States?

RevenueBase identified 12,146 company matches for ciso 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?

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

Which city has the most ciso services?

New York leads with 355 company records, followed by Houston (212) and Atlanta (181).

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 98,150 professional contacts with verified work emails tracked across these 12,146 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 12,146 ciso services based in the United States. Start with a free account, no credit card.

Download this list →

Related lists

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.