Company lists · Data refreshed November 2026

Top 25 Managed security companies based in Ireland

RevenueBase identified 70 company matches for managed security companies associated with Ireland as of November 2026 and tracks 3,012 professional contacts across them, including 673 with verified work emails. Dublin is the largest hub.

This list covers company matches for managed security companies associated with Ireland, 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
70Companies
3,012Contacts tracked
673Verified emails
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The 25 largest managed security companies based in Ireland

Ranked by team size
Top 25 of 70 company matches for managed security companies based in Ireland, 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 matchDublin 12, IrelandHQ recorded Nov 5, 2026201-500379 contacts →

Exact match

“We deliver fully managed security, networking, cloud and communications services designed to drive enterprise.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
2Exact matchDublin 12, IrelandHQ recorded Nov 5, 2026201-500249 contacts →

Exact match

“Nostra was established in 2006 and in that time has become one of Ireland’s most trusted providers of Managed IT and Cyber Security Services for a wide range of sectors.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
3Exact matchNaas, IrelandHQ recorded Nov 5, 2026501-1,000230 contacts →

Exact match

“4-Time OSPA Winners (Outstanding Contract Security Company) 2022 - 2025 Manguard Plus is a privately owned, Irish Security company focused exclusively on the provision of Manned…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
4Exact matchUnit W6a, IrelandHQ recorded Nov 5, 2026n/a151 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
5Exact matchRathcoole, IrelandHQ recorded Nov 5, 202651-20080 contacts →

Exact match

“The only security system to have ISO37001 - anti bribery and corruption and the first to obtain ISO27001 - cyber security.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
6Exact matchDublin, IrelandHQ recorded Nov 5, 202611-5071 contacts →

Exact match

“Secureism is founded by the brains who were awarded for their contribution to secure the cyber space on national as well as international level.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
7Exact matchDublin, IrelandHQ recorded Nov 5, 2026201-50057 contacts →

Exact match

“Provider of high end security services to the private & public sectors offering services in the following.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
8Exact matchGalway, IrelandHQ recorded Nov 5, 202651-20050 contacts →

Exact match

“TitanHQ and Redstor have merged to launch CyberSentriq, a cybersecurity champion built for MSPs and their customers.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
9Exact matchDublin 18, IrelandHQ recorded Nov 5, 202651-20048 contacts →

Exact match

“At Action24 we have been delivering intelligent security solutions for over 40 years.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
10Exact matchDublin, IrelandHQ recorded Nov 5, 2026501-1,00041 contacts →

Exact match

“From modest beginnings in 1979 Top Security has grown to become one of Ireland’s leading providers of security services and products.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
11Exact matchSandyford, IrelandHQ recorded Nov 5, 202651-20026 contacts →

Exact match

“Paradyn is a leading provider of IT security and consultancy services in Ireland, offering a comprehensive, best-in-class suite of security services to monitor, protect and defend…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
12Exact matchBlanchardstown, IrelandHQ recorded Nov 5, 202611-5024 contacts →

Exact match

“CommSec is an Irish cyber security company helping organisations protect their systems, data, and operations against modern cyber threats.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
13Exact matchDublin 24, IrelandHQ recorded Nov 5, 202651-20022 contacts →

Exact match

“Secure Management Solutions (SMS) is a security company founded by highly experienced security company managers with 80 years of experience together.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
14Exact matchDublin 2, IrelandHQ recorded Nov 5, 20261-1016 contacts →

Exact match

“Some of iPing's services - Tel: 01 524 1350 Managed Services The implementation of managed services in your network is an important piece in your overall network design.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
15Exact matchCappoge, IrelandHQ recorded Nov 5, 2026201-50012 contacts →

Exact match

“We provide excellence and attention to detail in domestic and commercial security all over Ireland.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
16Exact matchLimerick, IrelandHQ recorded Nov 5, 202611-5011 contacts →

Exact match

“Hybrid Technology Partners delivers proactive managed IT support, cybersecurity and monitoring, and IT strategy and AI alignment to Irish businesses.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
17Exact matchIrelandHQ recorded Nov 5, 202651-2009 contacts →

Exact match

“Ward Solutions is Ireland’s largest Information Security provider.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
18Exact matchLeinster, IrelandHQ recorded Nov 5, 202651-2009 contacts →

Exact match

“Taskforce Security Management Services is a pioneering start-up that has emerged as a leader in the field of security services in Ireland.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
19Exact matchDublin, IrelandHQ recorded Nov 5, 202651-2007 contacts →

Exact match

“We offer a comprehensive service to determine the best solution for your requirements.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
20Exact matchNaas, IrelandHQ recorded Nov 5, 20261-106 contacts →

Exact match

“Netfocus IT Solutions provides a comprehensive range of managed IT and cybersecurity services, supporting businesses in maintaining system uptime, safeguarding data, and enhancing…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
21Exact matchKilkenny, IrelandHQ recorded Nov 5, 202611-506 contacts →

Exact match

“At Panoptic, we know you want to be the kind of business owner who sleeps easy at night.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
22Exact matchNaas, IrelandHQ recorded Nov 5, 202611-506 contacts →

Exact match

“Novi delivers security-oriented IT services that reduce risk and enable growth.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
23Exact matchDublin, IrelandHQ recorded Nov 5, 20261-106 contacts →

Exact match

“Leacam offers security-first IT support services that help protect your business, minimise the number and severity of security incidents, and reduces your overall IT costs.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
24Exact matchLimerick, IrelandHQ recorded Nov 5, 20261-106 contacts →

Exact match

“We are a leading provider of fire maintenance and suppression systems, intruder detection, CCTV, access control and integrated security solutions for commercial and residential…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
25Exact matchSligo, IrelandHQ recorded Nov 5, 202611-505 contacts →

Exact match

“Enterprise Defence are an award winning team of cyber security specialists.”

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

Showing 25 of 70 managed security companies based in Ireland

See the full list, filter by size, metro and specialty, and access 673 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Managed security companies based in Ireland at a glance

As of Nov 5, 2026
22.3%Verified-email coverage
43.0Average contacts per company
11-50Median size (employees)
27.1%Largest-city concentration · Dublin
Nov 5, 2026Page data refreshed

Companies by employee count

1-10
18
11-50
27
51-200
11
201-500
7
501-1,000
4
5,001-10,000
1
10001+
1

Email recency for this list is measured worldwide rather than for Ireland, so it is reported there. Company counts and contact totals on this page are exact for Ireland, over 70 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 Ireland whose business descriptions match “managed 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 673 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 “managed security companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many managed security companies are there based in Ireland?

RevenueBase identified 70 company matches for managed security companies associated with Ireland 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?

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

Which city has the most managed security companies?

Dublin leads with 19 company records, followed by Naas (5) and Cork (2).

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 673 professional contacts with verified work emails tracked across these 70 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.