Company lists · Data refreshed November 2026
Top 25 Plc security companies based in the United States
RevenueBase identified 295 company matches for plc security companies associated with the United States as of November 2026 and tracks 5,750 professional contacts across them, including 2,311 with verified work emails. Houston is the largest hub.
This list covers company matches for plc security 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.
The 25 largest plc security companies based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 670 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 | |||||
| 2 | 464 contacts → | ||||
Exact match “NAPCO Security Technologies (NASDAQ: NSSC) is one of the world's leading manufacturers of technologically advanced electronic security equipment including intrusion and fire alarm…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 3 | 256 contacts → | ||||
Exact match “For over 50 years, Wittenbach has been a trusted leader in advanced security solutions in financial and commercial industries.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 4 | 224 contacts → | ||||
Exact match “Central Defense Security officers protect the human, intellectual and physical assets of our customers and their visitors.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 5 | 212 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 · Nov 5, 2026 · View company records in RevenueBase | |||||
| 6 | 210 contacts → | ||||
Exact match “Stone Security has been driving the implementation of network-based surveillance, access control and intrusion systems for over 15 years.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 7 | 174 contacts → | ||||
Exact match “We believe resilience depends on minimizing and managing the increasing risks facing the critical infrastructure and industrial systems that support our country, companies, and…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 8 | 160 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 9 | 135 contacts → | ||||
Exact match “Single Source for Integrated Systems Quad Plus provides industrial control systems, solutions, and services to a variety of industries.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 10 | 128 contacts → | ||||
Exact match “Iverify is the nation’s largest full-service interactive security company providing life safety, loss prevention, cyber breach reduction, and brand protection.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 11 | 113 contacts → | ||||
Exact match “EverLine provides fully-integrated compliance, SCADA/IT, control room and security services to more than 200 customers nationwide through a unique Technical Stack.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 12 | 102 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 | |||||
| 13 | 100 contacts → | ||||
Exact match “Protecting What Matters Most Since 1952 with the Best Fire and Security Solutions Mountain Alarm was founded in 1952 when fire detection was in its infancy and monitoring…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 14 | 96 contacts → | ||||
Exact match “Dispel delivers security that makes industrial operations run faster.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 15 | 91 contacts → | ||||
Exact match “A trusted security partner for over 20 years, Secom provides state-of-the-art security solutions to commercial properties, government, religious institutions, and schools and…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 16 | 79 contacts → | ||||
Exact match “Global Process Automation™ (GPA) is a full-service industrial technology solutions provider specializing in Discrete & Process Automation, OT Infrastructure & ICS Cybersecurity…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 17 | 62 contacts → | ||||
Exact match “Since 1993, SecurAlarm has served businesses by providing improved security measures.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 18 | 61 contacts → | ||||
Exact match “Trofholz Technologies is a Woman-Owned; Veteran-Owned Small Business located in Sacramento, California.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 19 | 59 contacts → | ||||
Exact match “In 2010, we emerged in the commercial fire and security market.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 20 | 57 contacts → | ||||
Exact match “Verve Industrial Protection has ensured reliable and secure industrial control systems for 30 years.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 21 | 54 contacts → | ||||
Exact match “Port53 Technologies is The Global Leader in Cisco-Based Managed Security Operations, helping organizations modernize and secure their digital environments through advanced…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 22 | 50 contacts → | ||||
Exact match “The premier security company of Texas where customers come first.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 23 | 47 contacts → | ||||
Exact match “Owned and led by the Culmer family, the Hue & Cry team is a close knit group of Fire Protection and Security System Specialists.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 24 | 43 contacts → | ||||
Exact match “Corsha securely connects the operational systems that run our world.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 25 | 40 contacts → | ||||
Exact match “Shiver Security Systems, Inc.” Recorded in the RevenueBase company graph · Nov 5, 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 “plc security companies”. 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 295 plc security companies based in the United States
See the full list, filter by size, metro and specialty, and access 2,311 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Plc security companies based in the United States at a glance
As of Nov 5, 2026Companies by employee count
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 295 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 “plc security 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 2,311 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 “plc security companies”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many plc security companies are there based in the United States?
RevenueBase identified 295 company matches for plc security 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 plc security companies?
Houston leads with 8 company records, followed by Miami (5) and New York (5).
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 2,311 professional contacts with verified work emails tracked across these 295 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.
Ready to reach these companies? Verified emails and direct dials for all 295 plc security companies based in the United States. Start with a free account, no credit card.
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Plc security companies by geography
- Plc security companies based in London, United Kingdom
- Plc security companies based in Australia
- Plc security companies based in Belgium
- Plc security companies based in Brazil
- Plc security companies based in Canada
- Plc security companies based in Chile
- Plc security companies based in France
- Plc security companies based in Germany
- Plc security companies based in India
- Plc security companies based in Ireland
- Plc security companies based in Israel
- Plc security companies based in Italy
Browse the directory
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.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Plc security companies based in London, United Kingdom
- Plc security companies based in Australia
- Plc security companies based in Belgium
- Plc security companies based in Brazil
- Plc security companies based in Canada
- Plc security companies based in Chile
Company intelligence · public preview
Top 25 plc security companies based in the United States
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 295 matching company records for plc security companies based in the United States, with 5,750 tracked contacts and 2,311 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 5, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 plc security companies based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  Dragos, INCdragos.comHQ: Hanover, MD, United StatesReported employees: 501-1,000 | Hanover, MD, United States | 501-1,000 | Exact match | 670 contacts → |
“Dragos provides the most effective OT cybersecurity technology for industrial and critical infrastructure to deliver on our global mission: to safeguard civilization.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Napco Security Technologiesnapcosecurity.comHQ: Amityville, NY, United StatesReported employees: 501-1,000 | Amityville, NY, United States | 501-1,000 | Exact match | 464 contacts → |
“NAPCO Security Technologies (NASDAQ: NSSC) is one of the world's leading manufacturers of technologically advanced electronic security equipment including intrusion and fire alarm…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Wittenbachwittenbach.comHQ: Sparks, MD, United StatesReported employees: 201-500 | Sparks, MD, United States | 201-500 | Exact match | 256 contacts → |
“For over 50 years, Wittenbach has been a trusted leader in advanced security solutions in financial and commercial industries.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Central Defense Security, LLCcentdef.com HQ: N. Little Rock, AR, United StatesReported employees: 501-1,000 | N. Little Rock, AR, United States | 501-1,000 | Exact match | 224 contacts → |
“Central Defense Security officers protect the human, intellectual and physical assets of our customers and their visitors.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Nextgen Securitynextgensecured.comHQ: Exton, PA, United StatesReported employees: 201-500 | Exton, PA, United States | 201-500 | Exact match | 212 contacts → |
“NextGen Security is a security systems integrator that offers industrial companies best in class industry knowledge, engineering design, implementation, management and on-going…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Stone Security, A Bearcom Companystonesecurity.netHQ: Salt Lake City, CA, United StatesReported employees: 201-500 | Salt Lake City, CA, United States | 201-500 | Exact match | 210 contacts → |
“Stone Security has been driving the implementation of network-based surveillance, access control and intrusion systems for over 15 years.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  RMC Globalrmcglobal.comHQ: Arlington, VA, United StatesReported employees: 51-200 | Arlington, VA, United States | 51-200 | Exact match | 174 contacts → |
“We believe resilience depends on minimizing and managing the increasing risks facing the critical infrastructure and industrial systems that support our country, companies, and…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  OLD Accountipsc.bizHQ: Hammond, LA, United StatesReported employees: Not recorded | Hammond, LA, United States | Not recorded | Exact match | 160 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 9 |  Quad Plusquadplus.comHQ: New Lenox, AZ, United StatesReported employees: 201-500 | New Lenox, AZ, United States | 201-500 | Exact match | 135 contacts → |
“Single Source for Integrated Systems Quad Plus provides industrial control systems, solutions, and services to a variety of industries.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Iverifyiverifysecurity.comHQ: Charlotte, NC, United StatesReported employees: 201-500 | Charlotte, NC, United States | 201-500 | Exact match | 128 contacts → |
“Iverify is the nation’s largest full-service interactive security company providing life safety, loss prevention, cyber breach reduction, and brand protection.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Everlineeverlineus.comHQ: Houston, TX, United StatesReported employees: 201-500 | Houston, TX, United States | 201-500 | Exact match | 113 contacts → |
“EverLine provides fully-integrated compliance, SCADA/IT, control room and security services to more than 200 customers nationwide through a unique Technical Stack.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Directdefensedirectdefense.comHQ: Denver, CO, United StatesReported employees: 51-200 | Denver, CO, United States | 51-200 | Exact match | 102 contacts → |
“DirectDefense provides enterprise risk assessments, penetration testing, ICS/SCADA security services, and 24/7 managed security services for companies of all sizes.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Mountain Alarmmountainalarm.comHQ: Ogden, UT, United StatesReported employees: 201-500 | Ogden, UT, United States | 201-500 | Exact match | 100 contacts → |
“Protecting What Matters Most Since 1952 with the Best Fire and Security Solutions Mountain Alarm was founded in 1952 when fire detection was in its infancy and monitoring…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Dispeldispel.comHQ: Austin, TX, United StatesReported employees: 51-200 | Austin, TX, United States | 51-200 | Exact match | 96 contacts → |
“Dispel delivers security that makes industrial operations run faster.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Secom Securitysecomllc.comHQ: Columbia, MD, United StatesReported employees: 11-50 | Columbia, MD, United States | 11-50 | Exact match | 91 contacts → |
“A trusted security partner for over 20 years, Secom provides state-of-the-art security solutions to commercial properties, government, religious institutions, and schools and…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  GPAglobal-business.netHQ: Wilmington, NC, United StatesReported employees: 51-200 | Wilmington, NC, United States | 51-200 | Exact match | 79 contacts → |
“Global Process Automation™ (GPA) is a full-service industrial technology solutions provider specializing in Discrete & Process Automation, OT Infrastructure & ICS Cybersecurity…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Securalarmsecuralarm.comHQ: Grand Rapids, MI, United StatesReported employees: 51-200 | Grand Rapids, MI, United States | 51-200 | Exact match | 62 contacts → |
“Since 1993, SecurAlarm has served businesses by providing improved security measures.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Trofholz Technologies, INCtrofholz.comHQ: Sacramento, CA, United StatesReported employees: 51-200 | Sacramento, CA, United States | 51-200 | Exact match | 61 contacts → |
“Trofholz Technologies is a Woman-Owned; Veteran-Owned Small Business located in Sacramento, California.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Titan Alarm & Fire INCtitanalarm.netHQ: Phoenix, AZ, United StatesReported employees: 51-200 | Phoenix, AZ, United States | 51-200 | Exact match | 59 contacts → |
“In 2010, we emerged in the commercial fire and security market.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Verve By Rockwell Automationverveindustrial.comHQ: Chicago, KY, United StatesReported employees: 51-200 | Chicago, KY, United States | 51-200 | Exact match | 57 contacts → |
“Verve Industrial Protection has ensured reliable and secure industrial control systems for 30 years.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Port53port53.comHQ: New York, NY, United StatesReported employees: 51-200 | New York, NY, United States | 51-200 | Exact match | 54 contacts → |
“Port53 Technologies is The Global Leader in Cisco-Based Managed Security Operations, helping organizations modernize and secure their digital environments through advanced…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Asap Security Servicesserviceasap.comHQ: Houston, TX, United StatesReported employees: 51-200 | Houston, TX, United States | 51-200 | Exact match | 50 contacts → |
“The premier security company of Texas where customers come first.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  HUE & Cry, INChueandcry.comHQ: Anderson, CA, United StatesReported employees: 51-200 | Anderson, CA, United States | 51-200 | Exact match | 47 contacts → |
“Owned and led by the Culmer family, the Hue & Cry team is a close knit group of Fire Protection and Security System Specialists.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Corshacorsha.comHQ: Vienna, VA, United StatesReported employees: 11-50 | Vienna, VA, United States | 11-50 | Exact match | 43 contacts → |
“Corsha securely connects the operational systems that run our world.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Shiver Security Systems, A PYE Barker Fire & Safety Companyshiversecurityservices.comHQ: Mason, OH, United StatesReported employees: 11-50 | Mason, OH, United States | 11-50 | Exact match | 40 contacts → |
“Shiver Security Systems, Inc.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 295 company matches
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Plc security companies: dataset insights
November 5, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
294 records in the displayed employee bands.
1 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
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 295 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: November 5, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for plc security companies?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many plc security companies did RevenueBase find based in the United States?
The saved snapshot records 295 matching company records, 5,750 tracked contacts and 2,311 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: November 5, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Plc security companies by geography
- Plc security companies based in London, United Kingdom
- Plc security companies based in Australia
- Plc security companies based in Belgium
- Plc security companies based in Brazil
- Plc security companies based in Canada
- Plc security companies based in Chile
- Plc security companies based in France
- Plc security companies based in Germany
- Plc security companies based in India
- Plc security companies based in Ireland
- Plc security companies based in Israel
- Plc security companies based in Italy
Browse the directory
Cite this list
RevenueBase Data Team. Top 25 plc security companies based in the United States. Snapshot: November 5, 2026. https://revenuebase.ai/companies/plc-security-companies/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Plc security companies based in London, United Kingdom
- Plc security companies based in Australia
- Plc security companies based in Belgium
- Plc security companies based in Brazil
- Plc security companies based in Canada
- Plc security companies based in Chile
Company intelligence · public preview
Top 25 plc security companies based in the United States
RevenueBase records 295 matching company records for plc security companies based in the United States, with 5,750 tracked contacts and 2,311 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 5, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 plc security companies based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Dragos, INCdragos.com HQ: Hanover, MD, United StatesReported employees: 501-1,000 | Hanover, MD, United States | 501-1,000 | Exact match | 670 contacts → |
“Dragos provides the most effective OT cybersecurity technology for industrial and critical infrastructure to deliver on our global mission: to safeguard civilization.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Napco Security Technologiesnapcosecurity.com HQ: Amityville, NY, United StatesReported employees: 501-1,000 | Amityville, NY, United States | 501-1,000 | Exact match | 464 contacts → |
“NAPCO Security Technologies (NASDAQ: NSSC) is one of the world's leading manufacturers of technologically advanced electronic security equipment including intrusion and fire alarm…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Wittenbachwittenbach.com HQ: Sparks, MD, United StatesReported employees: 201-500 | Sparks, MD, United States | 201-500 | Exact match | 256 contacts → |
“For over 50 years, Wittenbach has been a trusted leader in advanced security solutions in financial and commercial industries.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Central Defense Security, LLCcentdef.com HQ: N. Little Rock, AR, United StatesReported employees: 501-1,000 | N. Little Rock, AR, United States | 501-1,000 | Exact match | 224 contacts → |
“Central Defense Security officers protect the human, intellectual and physical assets of our customers and their visitors.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Nextgen Securitynextgensecured.com HQ: Exton, PA, United StatesReported employees: 201-500 | Exton, PA, United States | 201-500 | Exact match | 212 contacts → |
“NextGen Security is a security systems integrator that offers industrial companies best in class industry knowledge, engineering design, implementation, management and on-going…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Stone Security, A Bearcom Companystonesecurity.net HQ: Salt Lake City, CA, United StatesReported employees: 201-500 | Salt Lake City, CA, United States | 201-500 | Exact match | 210 contacts → |
“Stone Security has been driving the implementation of network-based surveillance, access control and intrusion systems for over 15 years.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | RMC Globalrmcglobal.com HQ: Arlington, VA, United StatesReported employees: 51-200 | Arlington, VA, United States | 51-200 | Exact match | 174 contacts → |
“We believe resilience depends on minimizing and managing the increasing risks facing the critical infrastructure and industrial systems that support our country, companies, and…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | OLD Accountipsc.biz HQ: Hammond, LA, United StatesReported employees: Not recorded | Hammond, LA, United States | Not recorded | Exact match | 160 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 9 | Quad Plusquadplus.com HQ: New Lenox, AZ, United StatesReported employees: 201-500 | New Lenox, AZ, United States | 201-500 | Exact match | 135 contacts → |
“Single Source for Integrated Systems Quad Plus provides industrial control systems, solutions, and services to a variety of industries.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Iverifyiverifysecurity.com HQ: Charlotte, NC, United StatesReported employees: 201-500 | Charlotte, NC, United States | 201-500 | Exact match | 128 contacts → |
“Iverify is the nation’s largest full-service interactive security company providing life safety, loss prevention, cyber breach reduction, and brand protection.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Everlineeverlineus.com HQ: Houston, TX, United StatesReported employees: 201-500 | Houston, TX, United States | 201-500 | Exact match | 113 contacts → |
“EverLine provides fully-integrated compliance, SCADA/IT, control room and security services to more than 200 customers nationwide through a unique Technical Stack.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Directdefensedirectdefense.com HQ: Denver, CO, United StatesReported employees: 51-200 | Denver, CO, United States | 51-200 | Exact match | 102 contacts → |
“DirectDefense provides enterprise risk assessments, penetration testing, ICS/SCADA security services, and 24/7 managed security services for companies of all sizes.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Mountain Alarmmountainalarm.com HQ: Ogden, UT, United StatesReported employees: 201-500 | Ogden, UT, United States | 201-500 | Exact match | 100 contacts → |
“Protecting What Matters Most Since 1952 with the Best Fire and Security Solutions Mountain Alarm was founded in 1952 when fire detection was in its infancy and monitoring…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Dispeldispel.com HQ: Austin, TX, United StatesReported employees: 51-200 | Austin, TX, United States | 51-200 | Exact match | 96 contacts → |
“Dispel delivers security that makes industrial operations run faster.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Secom Securitysecomllc.com HQ: Columbia, MD, United StatesReported employees: 11-50 | Columbia, MD, United States | 11-50 | Exact match | 91 contacts → |
“A trusted security partner for over 20 years, Secom provides state-of-the-art security solutions to commercial properties, government, religious institutions, and schools and…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | GPAglobal-business.net HQ: Wilmington, NC, United StatesReported employees: 51-200 | Wilmington, NC, United States | 51-200 | Exact match | 79 contacts → |
“Global Process Automation™ (GPA) is a full-service industrial technology solutions provider specializing in Discrete & Process Automation, OT Infrastructure & ICS Cybersecurity…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Securalarmsecuralarm.com HQ: Grand Rapids, MI, United StatesReported employees: 51-200 | Grand Rapids, MI, United States | 51-200 | Exact match | 62 contacts → |
“Since 1993, SecurAlarm has served businesses by providing improved security measures.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Trofholz Technologies, INCtrofholz.com HQ: Sacramento, CA, United StatesReported employees: 51-200 | Sacramento, CA, United States | 51-200 | Exact match | 61 contacts → |
“Trofholz Technologies is a Woman-Owned; Veteran-Owned Small Business located in Sacramento, California.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Titan Alarm & Fire INCtitanalarm.net HQ: Phoenix, AZ, United StatesReported employees: 51-200 | Phoenix, AZ, United States | 51-200 | Exact match | 59 contacts → |
“In 2010, we emerged in the commercial fire and security market.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Verve By Rockwell Automationverveindustrial.com HQ: Chicago, KY, United StatesReported employees: 51-200 | Chicago, KY, United States | 51-200 | Exact match | 57 contacts → |
“Verve Industrial Protection has ensured reliable and secure industrial control systems for 30 years.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Port53port53.com HQ: New York, NY, United StatesReported employees: 51-200 | New York, NY, United States | 51-200 | Exact match | 54 contacts → |
“Port53 Technologies is The Global Leader in Cisco-Based Managed Security Operations, helping organizations modernize and secure their digital environments through advanced…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Asap Security Servicesserviceasap.com HQ: Houston, TX, United StatesReported employees: 51-200 | Houston, TX, United States | 51-200 | Exact match | 50 contacts → |
“The premier security company of Texas where customers come first.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | HUE & Cry, INChueandcry.com HQ: Anderson, CA, United StatesReported employees: 51-200 | Anderson, CA, United States | 51-200 | Exact match | 47 contacts → |
“Owned and led by the Culmer family, the Hue & Cry team is a close knit group of Fire Protection and Security System Specialists.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Corshacorsha.com HQ: Vienna, VA, United StatesReported employees: 11-50 | Vienna, VA, United States | 11-50 | Exact match | 43 contacts → |
“Corsha securely connects the operational systems that run our world.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Shiver Security Systems, A PYE Barker Fire & Safety Companyshiversecurityservices.com HQ: Mason, OH, United StatesReported employees: 11-50 | Mason, OH, United States | 11-50 | Exact match | 40 contacts → |
“Shiver Security Systems, Inc.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 295 company matches
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Plc security companies: dataset insights
November 5, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
294 records in the displayed employee bands.
1 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
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 295 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: November 5, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for plc security companies?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many plc security companies did RevenueBase find based in the United States?
The saved snapshot records 295 matching company records, 5,750 tracked contacts and 2,311 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: November 5, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Plc security companies by geography
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Cite this list
RevenueBase Data Team. Top 25 plc security companies based in the United States. Snapshot: November 5, 2026. https://revenuebase.ai/companies/plc-security-companies/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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