Company lists · Data refreshed November 2026

Top 25 Grid cybersecurity companies based in the United States

RevenueBase identified 235 company matches for grid cybersecurity companies associated with the United States as of November 2026 and tracks 4,247 professional contacts across them, including 1,644 with verified work emails. New York is the largest hub.

This list covers company matches for grid cybersecurity companies 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 5, 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 5, 2026 How this list was built
235Companies
4,247Contacts tracked
1,644Verified emails
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The 25 largest grid cybersecurity companies based in the United States

Ranked by team size
Top 25 of 235 company matches for grid cybersecurity companies based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 5, 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 matchHanover, MD, United StatesHQ recorded Nov 5, 2026501-1,000670 contacts →

Exact match

“Dragos provides the most effective OT cybersecurity technology for industrial and critical infrastructure to deliver on our global mission: to safeguard civilization.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
2Exact matchGlobally Distributed, United StatesHQ recorded Nov 5, 2026201-500190 contacts →

Exact match

“With 30 years of experience in cyber defense, DeepSeas is trusted by nearly clients around the world, including Fortune 100 enterprises and mid-market organizations, municipality…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
3Exact matchSan Francisco, CA, United StatesHQ recorded Nov 5, 202651-200186 contacts →

Exact match

“Gridware is a technology company focused on protecting and enhancing the electrical grid.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
4Exact matchSan Francisco, CA, United StatesHQ recorded Nov 5, 2026201-500173 contacts →

Exact match

“Vehere is an AI cyber defense company operating at the intersection of national security and enterprise security.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
5Exact matchDenver, CO, United StatesHQ recorded Nov 5, 202651-200102 contacts →

Exact match

“DirectDefense provides enterprise risk assessments, penetration testing, ICS/SCADA security services, and 24/7 managed security services for companies of all sizes.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
6Exact matchDallas, TX, United StatesHQ recorded Nov 5, 202651-20069 contacts →

Exact match

“Apollo Information Systems delivers intelligence-led cybersecurity solutions for government agencies, educational institutions, and enterprises.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
7Exact matchShenandoah, TX, United StatesHQ recorded Nov 5, 202651-20066 contacts →

Exact match

“Lancium is an energy technology and infrastructure company uniquely positioned to catalyze and enable the AI data center demand mega-trend, with the integration and orchestration…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
8Exact matchHuntersville, NC, United StatesHQ recorded Nov 5, 202651-20059 contacts →

Exact match

“Atom Power is an innovative company providing transformative grid technology that delivers unparalleled protection, visibility, and control at the point of consumption.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
9Exact matchLeesburg, VA, United StatesHQ recorded Nov 5, 202651-20050 contacts →

Exact match

“ClearFocus® Technologies provides advanced cybersecurity services that secure our nation’s most sensitive assets.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
10Exact matchHerndon, VA, United StatesHQ recorded Nov 5, 202651-20043 contacts →

Exact match

“Your Vision Achieved.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
11Exact matchNashville, TN, United StatesHQ recorded Nov 5, 202651-20041 contacts →

Exact match

“Redspin, a division of Clearwater, has become one of the most trusted cybersecurity companies for the Defense Industrial Base.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
12Exact matchOdenton, MD, United StatesHQ recorded Nov 5, 202611-5036 contacts →

Exact match

“SecuLore was acquired by Motorola Solutions in 2026.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
13Exact matchSouthport, NC, United StatesHQ recorded Nov 5, 202611-5031 contacts →

Exact match

“At Cyber Realm Solutions, we provide the expertise needed to support every stage of cybersecurity initiatives across nuclear, utility, and critical infrastructure environments.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
14Exact matchFairfax, United StatesHQ recorded Nov 5, 202611-5031 contacts →

Exact match

“InfraShield is a U.S-based cyber-physical security company specializing in the protection of critical infrastructure systems across OT and IT environments.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
15Exact matchLas Vegas, NV, United StatesHQ recorded Nov 5, 202611-5030 contacts →

Exact match

“DruvStar provides data and cyber defense solutions, offering enterprise-grade managed solutions operated from our Vegas-based SOC DruvStar solutions include: 1.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
16Exact matchGreenwood Village, CO, United StatesHQ recorded Nov 5, 202651-20030 contacts →

Exact match

“Cavalry Solutions, LLC is a pure-play, security consulting services firm that serves critical infrastructure and specializes in complex systems.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
17Exact matchScottsdale, AZ, United StatesHQ recorded Nov 5, 202611-5029 contacts →

Exact match

“Phoenix Cyber is a leading cybersecurity services company providing security engineering, operations, and technical cybersecurity expertise to organizations determined to mitigate…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
18Exact matchFairlawn, OH, United StatesHQ recorded Nov 5, 202651-20029 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
19Exact matchBrighton, MI, United StatesHQ recorded Nov 5, 202611-5027 contacts →

Exact match

“Empowering Trust, Securing the Future At the core of our mission is a simple yet powerful principle: empowering our customers and partners with the freedom to choose solutions…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
20Exact matchFredericksburg, VA, United StatesHQ recorded Nov 5, 202611-5026 contacts →

Exact match

“As an IT company founded inside an energy cooperative, we understand the critical role that energy cooperatives and utility partners play in their communities.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
21Exact matchNew York, United StatesHQ recorded Nov 5, 202651-20026 contacts →

Exact match

“CipherTechs is now part of CyberMaxx, a tech-enabled cybersecurity service provider.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
22Exact matchAlexandria, VA, United StatesHQ recorded Nov 5, 202611-5026 contacts →

Exact match

“Securicon provides expert consulting for application, system and network security.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
23Exact matchKatonah, FL, United StatesHQ recorded Nov 5, 202611-5025 contacts →

Exact match

“Black Talon Security is a dedicated cybersecurity company that goes above and beyond traditional IT measures to provide increased protection against cyber threats.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
24Exact matchAllentown, SC, United StatesHQ recorded Nov 5, 202611-5025 contacts →

Exact match

“Netizen is an award-winning ISO 27001/9001 and CMMI Level 3 certified provider of products and services focusing on cyber security, compliance, and software assurance (DevSecOps).”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
25Exact matchMoraine, OH, United StatesHQ recorded Nov 5, 202611-5025 contacts →

Exact match

“We're not just another cybersecurity company, we're your trusted partner in the ever-evolving landscape of cyber warfare.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase

Showing 25 of 235 grid cybersecurity companies based in the United States

See the full list, filter by size, metro and specialty, and access 1,644 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Grid cybersecurity companies based in the United States at a glance

As of Nov 5, 2026
38.7%Verified-email coverage
18.1Average contacts per company
11-50Median size (employees)
4.3%Largest-city concentration · New York
Nov 5, 2026Page data refreshed

Companies by employee count

1-10
106
11-50
87
51-200
32
201-500
4
501-1,000
3
1,001-5,000
1
5,001-10,000
1

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 235 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 “grid cybersecurity companies” 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 1,644 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 5, 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 “grid cybersecurity companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many grid cybersecurity companies are there based in the United States?

RevenueBase identified 235 company matches for grid cybersecurity companies 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?

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

Which city has the most grid cybersecurity companies?

New York leads with 10 company records, followed by Houston (8) and Washington (6).

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 1,644 professional contacts with verified work emails tracked across these 235 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 5, 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.