Company lists · Data refreshed September 2026

Top 25 Data center security contractors based in Ireland

Name: Data center security contractors based in Ireland
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 63 companies tracked

RevenueBase identified 63 data center security contractors headquartered in Ireland as of September 2026 and tracks 1,066 professional contacts across them, including 383 with verified work emails. Dublin is the largest hub.

This list covers data center security contractors headquartered in Ireland, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 28, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 28, 2026 86% judged on-target in blind review

63Companies

1,066Contacts tracked

383Verified emails

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The 25 largest data center security contractors based in Ireland

Ranked by team size

Top 25 of 63 data center security contractors based in Ireland, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to data center security contractors: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Nostra	Partial evidence	Dublin 12, IrelandHQ checked Sep 28, 2026	201-500	288 contacts →
	Partial evidence “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.” Source: RevenueBase Database · checked Sep 28, 2026
2	CSC	Indirect evidence	Unit W6a, IrelandHQ checked Sep 28, 2026	n/a	167 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026
3	Sharp Group Fire & Security Services	Partial evidence	Rathcoole, IrelandHQ checked Sep 28, 2026	51-200	79 contacts →
	Partial evidence “The only security system to have ISO37001 - anti bribery and corruption and the first to obtain ISO27001 - cyber security.” Source: RevenueBase Database · checked Sep 28, 2026
4	Vanderbilt By Acre Security	Indirect evidence	Dublin, IrelandHQ checked Sep 28, 2026	201-500	57 contacts →
	Indirect evidence “Acre brands, united!” Source: RevenueBase Database · checked Sep 28, 2026
5	Pioneer Fire & Security	Partial evidence	Dublin, IrelandHQ checked Sep 28, 2026	11-50	40 contacts →
	Partial evidence “Pioneer Fire & Security is run by professionals with a strong pedigree in the Irish life safety & security industry.” Source: RevenueBase Database · checked Sep 28, 2026
6	Paradyn	Partial evidence	Sandyford, IrelandHQ checked Sep 28, 2026	51-200	27 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 28, 2026
7	Wilec Life Safety & Security Systems	Partial evidence	Rathnew, IrelandHQ checked Sep 28, 2026	11-50	23 contacts →
	Partial evidence “Wilec (Fire & Security) Ltd was incorporated in June 2002 and specialises in the installation and maintenance of electronic fire, life safety and security systems to all sectors…” Source: RevenueBase Database · checked Sep 28, 2026
8	Mercury Security Distribution	Partial evidence	Dublin 24, IrelandHQ checked Sep 28, 2026	11-50	19 contacts →
	Partial evidence “Mercury Security Distribution is a leading provider of innovative security solutions for businesses of all sizes.” Source: RevenueBase Database · checked Sep 28, 2026
9	Coleman Electronics LTD	Partial evidence	Ballina, IrelandHQ checked Sep 28, 2026	51-200	19 contacts →
	Partial evidence “Established in 1983, Coleman Electronics Ltd is one of the market leaders in the electronics and security industry in both the west and northwest of Ireland, whilst also operating…” Source: RevenueBase Database · checked Sep 28, 2026
10	Third EYE Technology	Partial evidence	Nenagh, IrelandHQ checked Sep 28, 2026	1-10	13 contacts →
	Partial evidence “Third Eye Technology specialise in providing security and management solutions through the integration and use of CCTV, Access Control, Intruder Alarm Systems, Automation and…” Source: RevenueBase Database · checked Sep 28, 2026
11	ATORO	Indirect evidence	Portarlington, IrelandHQ checked Sep 28, 2026	11-50	13 contacts →
	Indirect evidence “Atoro is a cyber compliance consultancy for scaling software companies, and Europe's first ISO 42001 certified consultancy.” Source: RevenueBase Database · checked Sep 28, 2026
12	Viatech Security Systems LTD	Partial evidence	Dublin 12, IrelandHQ checked Sep 28, 2026	11-50	12 contacts →
	Partial evidence “Viatech Security Systems is a leading provider of integrated electronic security systems, delivering end-to-end solutions that keep your people, property, and assets safe.” Source: RevenueBase Database · checked Sep 28, 2026
13	Ward Solutions	Partial evidence	IrelandHQ checked Sep 28, 2026	51-200	11 contacts →
	Partial evidence “Ward Solutions is Ireland’s largest Information Security provider.” Source: RevenueBase Database · checked Sep 28, 2026
14	Park 100 Fire & Security	Partial evidence	Wexford, IrelandHQ checked Sep 28, 2026	11-50	9 contacts →
	Partial evidence “Park 100 security specialists will design the best possible solution for you using state-of-the-art equipment to ensure safety 24/7 – 365 days a year.” Source: RevenueBase Database · checked Sep 28, 2026
15	Moran Cctv	Indirect evidence	Dundalk, IrelandHQ checked Sep 28, 2026	11-50	7 contacts →
	Indirect evidence “At Moran CCTV we pride ourselves on offering our clients unparalleled service for the solutions we provide.” Source: RevenueBase Database · checked Sep 28, 2026
16	Rayn Safety Security	Partial evidence	Limerick, IrelandHQ checked Sep 28, 2026	1-10	6 contacts →
	Partial evidence “We are a leading provider of fire maintenance and suppression systems, intruder detection, CCTV, access control and integrated security solutions for commercial and residential…” Source: RevenueBase Database · checked Sep 28, 2026
17	Fuartech	Indirect evidence	Dublin, IrelandHQ checked Sep 28, 2026	11-50	6 contacts →
	Indirect evidence “At Fuartech, we have a reputation for excellence.” Source: RevenueBase Database · checked Sep 28, 2026
18	Securecom	Partial evidence	Galway, IrelandHQ checked Sep 28, 2026	1-10	6 contacts →
	Partial evidence “We are a Galway based electronic security system company with over 100 years of combined experience, working with intruder alarms, fire alarms, HD CCTV systems, access control and…” Source: RevenueBase Database · checked Sep 28, 2026
19	Advanced Digital Security Limited	Partial evidence	Ardee, IrelandHQ checked Sep 28, 2026	1-10	5 contacts →
	Partial evidence “Advanced Digital Security Ireland is a security systems provider located at Ardee Business Park, Co.” Source: RevenueBase Database · checked Sep 28, 2026
20	APM Securities	Partial evidence	Castlebar, IrelandHQ checked Sep 28, 2026	11-50	4 contacts →
	Partial evidence “APM Securities is a security company based out of Castlebar, Ireland with national coverage.” Source: RevenueBase Database · checked Sep 28, 2026
21	Stalwart Security & Fire	Partial evidence	Ballyvolane, IrelandHQ checked Sep 28, 2026	11-50	4 contacts →
	Partial evidence “Stalwart Security & Fire was established in 1984.” Source: RevenueBase Database · checked Sep 28, 2026
22	Hall Alarms LTD	Partial evidence	Clonmel, IrelandHQ checked Sep 28, 2026	11-50	3 contacts →
	Partial evidence “We are experts in Security, Fire, CCTV, Access Control & Emergency Lighting Systems Installation and maintenance with over 40 years experience and based in Clonmel, Co Tipperary.” Source: RevenueBase Database · checked Sep 28, 2026
23	Integrity360 Europe	Indirect evidence	IrelandHQ checked Sep 28, 2026	201-500	3 contacts →
	Indirect evidence “Advantio, was acquired by Integrity360 in July 2023.” Source: RevenueBase Database · checked Sep 28, 2026
24	Active Security Solutions	Partial evidence	Dublin, IrelandHQ checked Sep 28, 2026	1-10	3 contacts →
	Partial evidence “We safeguard client assets with the latest Security Technology in Intruder Alarms, CCTV, Access & Fire Control Systems.” Source: RevenueBase Database · checked Sep 28, 2026
25	GME Security	Strong evidence	Dublin, IrelandHQ checked Sep 28, 2026	11-50	2 contacts →
	Strong evidence “About GME Security Licensed by the Private Security Authority, certified by the National Standards Authority, Ireland and is Registered as an Electrical Contractor to carry out…” Source: RevenueBase Database · checked Sep 28, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: data center security contractors. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names data center security contractors.
Partial evidence: Its own public description names part of data center security contractors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name data center security contractors. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 63 data center security contractors based in Ireland

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Data center security contractors based in Ireland at a glance

As of Sep 28, 2026

35.9%Verified-email coverage

16.9Average contacts per company

11-50Median size (employees)

23.8%Largest-city concentration · Dublin

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

10001+

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 63 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among data center security contractors, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Ireland whose own description of what they do matches “data center security contractors”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names data center security contractors), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among data center security contractors, and records with no verified work email. Companies headquartered outside Ireland are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 383 across the full list. 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 September 28, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names data center security contractors, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many data center security contractors are there based in Ireland?

RevenueBase identified 63 data center security contractors headquartered in Ireland as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Nostra, headquartered in Dublin, tops this list with the largest team on record.

Which city has the most data center security contractors?

Dublin leads with 15 headquartered companies, followed by Ballymount (2) and Citywest Business Campus (2).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 383 verified decision-maker contacts tracked across these 63 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 28, 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 Smart Search, 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.