Company lists · Data refreshed October 2026

Top 25 Critical infrastructure protection contractors based in the United States

RevenueBase identified 1,328 company matches for critical infrastructure protection contractors associated with the United States as of October 2026 and tracks 33,973 professional contacts across them, including 12,212 with verified work emails. New York is the largest hub.

This list covers company matches for critical infrastructure protection contractors 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 October 10, 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 Oct 10, 2026 How this list was built
1,328Companies
33,973Contacts tracked
12,212Verified emails
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The 25 largest critical infrastructure protection contractors based in the United States

Ranked by team size
Top 25 of 1,328 company matches for critical infrastructure protection contractors based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 10, 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 matchHoffman Estates, IL, United StatesHQ recorded Oct 10, 202610001+5,878 contacts →

Exact match

“Convergint is a global systems integrator focused on delivering results for our customers through unparalleled service excellence.”

Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
2Exact matchAnnapolis, MD, United StatesHQ recorded Oct 10, 20261,001-5,0002,143 contacts →

Exact match

“Crisis24, a GardaWorld company, is widely regarded as the leading integrated risk management, crisis response, consulting, and global protective solutions firm, serving the…”

Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
3Exact matchLeawood, KS, United StatesHQ recorded Oct 10, 20261,001-5,0002,128 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 · Oct 10, 2026 · View company records in RevenueBase
4Exact matchHerndon, VA, United StatesHQ recorded Oct 10, 202610001+1,806 contacts →

Exact match

“Paragon Systems employs over 10,500 professionals in specialized operations providing security, fire, investigations, inspections, cybersecurity, risk management, and mission…”

Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
5Exact matchMorrisville, NC, United StatesHQ recorded Oct 10, 2026501-1,0001,189 contacts →

Exact match

“IEM is a professional services firm dedicated to building a safe, secure, and resilient world.”

Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
6Exact matchPearl River, NY, United StatesHQ recorded Oct 10, 20265,001-10,0001,042 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 · Oct 10, 2026 · View company records in RevenueBase
7Exact matchSpring, TX, United StatesHQ recorded Oct 10, 20261,001-5,000895 contacts →

Exact match

“ABSG Consulting Inc.(ABS Consulting) is part of ABS Group of Companies, a global leader in safety and risk management for critical infrastructure worldwide and a wholly owned…”

Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
8Exact matchPost Falls, ID, United StatesHQ recorded Oct 10, 20261,001-5,000580 contacts →

Exact match

“Raycap is a privately-held technology solutions provider offering products and services that support and protect the world’s critical telecommunications, energy, transportation…”

Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
9Exact matchMiami, FL, United StatesHQ recorded Oct 10, 20261,001-5,000574 contacts →

Exact match

“Security Alliance is a highly experienced provider of security solutions for private and business environments.”

Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
10Exact matchNew York, NY, United StatesHQ recorded Oct 10, 202610001+565 contacts →

Exact match

“Allied Universal Enhanced Protection Services delivers unrivaled threat mitigation expertise for government and business entities worldwide.”

Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
11Exact matchMclean, VA, United StatesHQ recorded Oct 10, 20261,001-5,000447 contacts →

Exact match

“At Xcelerate, safeguarding the nation isn’t just a mission-it’s our obsession.”

Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
12Exact matchMitchell, SD, United StatesHQ recorded Oct 10, 2026501-1,000351 contacts →

Exact match

“Vantage Point is a premier engineering and consulting firm serving the broadband, energy, enterprise, and banking industries.”

Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
13Exact matchRockville Centre, NY, United StatesHQ recorded Oct 10, 20261,001-5,000280 contacts →

Exact match

“Welcome to Doyle Security Services (DSS) where a team of responsive security professionals stands ready to meet your needs in this ever-changing business environment.”

Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
14Exact matchRockville, MD, United StatesHQ recorded Oct 10, 2026201-500275 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 · Oct 10, 2026 · View company records in RevenueBase
15Exact matchFremont, CA, United StatesHQ recorded Oct 10, 2026201-500273 contacts →

Exact match

“Northland Controls designs, installs, manages and harmonizes physical security systems across the globe with unparalleled services.”

Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
16Exact matchEdmond, OK, United StatesHQ recorded Oct 10, 202651-200253 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 · Oct 10, 2026 · View company records in RevenueBase
17Exact matchMclean, VA, United StatesHQ recorded Oct 10, 2026501-1,000247 contacts →

Exact match

“About VMD VMD, now a part of Xcelerate Solutions, is a leading defense and national security company, delivering integrated solutions in enterprise security, strategic consulting…”

Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
18Exact matchPort Matilda, PA, United StatesHQ recorded Oct 10, 2026201-500211 contacts →

Exact match

“Mission Critical Partners (MCP) is a leading provider of consulting, data integration, network, and cybersecurity solutions.”

Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
19Exact matchExton, PA, United StatesHQ recorded Oct 10, 2026201-500206 contacts →

Exact match

“NextGen Security is a security systems integrator that offers industrial companies best in class industry knowledge, engineering design, implementation, management and on-going…”

Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
20Exact matchBend, OR, United StatesHQ recorded Oct 10, 2026201-500196 contacts →

Exact match

“Lindahl Reed empowers tomorrow by inspiring change and shaping a better future.”

Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
21Exact matchAnn Arbor, MI, United StatesHQ recorded Oct 10, 2026201-500172 contacts →

Exact match

“i2G Systems is an industry leading safety and security technology and professional services firm, specializing in design, engineering, program management, installation…”

Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
22Exact matchNew York, NY, United StatesHQ recorded Oct 10, 2026501-1,000168 contacts →

Exact match

“Silverseal is a comprehensive security solutions firm with worldwide affiliations that can provide global security services in a highly professional manner.”

Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
23Exact matchHouston, TX, United StatesHQ recorded Oct 10, 2026201-500167 contacts →

Exact match

“Critical Energy Infrastructure Services (CEIS) is a nationally recognized leader in delivering strategic project solutions that support America’s energy infrastructure and…”

Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
24Exact matchSt. Louis, MO, United StatesHQ recorded Oct 10, 202651-200162 contacts →

Exact match

“Faith Group LLC was established in 2004 as a full-service women-owned consulting and engineering firm specializing in the planning and design of security, IT, audiovisual, safety…”

Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
25Exact matchMclean, VA, United StatesHQ recorded Oct 10, 2026201-500148 contacts →

Exact match

“Integral partners with federal defense, intelligence, and civilian leaders to tackle their most important challenges and deliver transformative solutions.”

Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase

Showing 25 of 1,328 critical infrastructure protection contractors based in the United States

See the full list, filter by size, metro and specialty, and access 12,212 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Critical infrastructure protection contractors based in the United States at a glance

As of Oct 10, 2026
35.9%Verified-email coverage
25.6Average contacts per company
1-10Median size (employees)
2.8%Largest-city concentration · New York
Oct 10, 2026Page data refreshed

Companies by employee count

1-10
697
11-50
399
51-200
150
201-500
39
501-1,000
14
1,001-5,000
20
5,001-10,000
3
10001+
4

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 1,328 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 “critical infrastructure protection contractors” 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 12,212 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 October 10, 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 “critical infrastructure protection contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many critical infrastructure protection contractors are there based in the United States?

RevenueBase identified 1,328 company matches for critical infrastructure protection contractors associated with the United States as of October 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?

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

Which city has the most critical infrastructure protection contractors?

New York leads with 37 company records, followed by Washington (36) and Houston (35).

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 12,212 professional contacts with verified work emails tracked across these 1,328 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 October 10, 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.