Company lists · Data refreshed September 2026

Top 24 Ics security companies based in Ireland

Name: Ics security companies based in Ireland
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 3, 2026 47 companies tracked

RevenueBase identified 47 ics security companies headquartered in Ireland as of September 2026 and tracks 1,194 professional contacts across them, including 496 with verified work emails and 102 with mobile numbers. Dublin is the largest hub.

This list covers ics security companies 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, how directly it supports the match, and when it was last checked. Data refreshed September 3, 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 HQ checked on every row Match evidence on every row Refreshed Sep 3, 2026 86% judged on-target in blind review

47Companies

1,194Contacts tracked

496Verified emails

102Mobile numbers

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The 24 largest ics security companies based in Ireland

Ranked by team size

Top 24 of 47 ics security companies based in Ireland, ranked by team size, largest first. Data refreshed Sep 3, 2026. Evidence rates how directly each company's own description names ics security companies: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	NostraPartial evidence	Dublin 12, IrelandHQ checked Sep 3, 2026	201-500	286
	“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: company website · checked Sep 3, 2026
2	Smarttech247Indirect evidence	Belfast, IrelandHQ checked Sep 3, 2026	51-200	188
	“At Smarttech247 we help global companies defend against cyber crime and protect their operations.” Source: company website · checked Sep 3, 2026
3	CSCIndirect evidence	Naas, IrelandHQ checked Sep 3, 2026	n/a	167
	Source: company website · checked Sep 3, 2026
4	PRO SecurityPartial evidence	Galway, IrelandHQ checked Sep 3, 2026	n/a	96
	“Pro Security was set up in 2015, since then we have grown our customer base to over throughout Ireland.” Source: company website · checked Sep 3, 2026
5	Sharp Group Fire & Security ServicesPartial evidence	Rathcoole, IrelandHQ checked Sep 3, 2026	51-200	79
	“The only security system to have ISO37001 - anti bribery and corruption and the first to obtain ISO27001 - cyber security.” Source: company website · checked Sep 3, 2026
6	Action24irelandPartial evidence	IrelandHQ checked Sep 3, 2026	51-200	40
	“At Action24 we have been delivering intelligent security solutions for over 40 years.” Source: company website · checked Sep 3, 2026
7	ThreatscapePartial evidence	Dublin, IrelandHQ checked Sep 3, 2026	11-50	38
	“We are a pure play IT security company, which allows us to focus solely on protecting your business from cyber threats.” Source: company website · checked Sep 3, 2026
8	ParadynPartial evidence	Sandyford, IrelandHQ checked Sep 3, 2026	51-200	28
	“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: company website · checked Sep 3, 2026
9	Commsec Cyber SecurityPartial evidence	IrelandHQ checked Sep 3, 2026	11-50	22
	“CommSec is an Irish cyber security company helping organisations protect their systems, data, and operations against modern cyber threats.” Source: company website · checked Sep 3, 2026
10	Coleman Electronics LTDPartial evidence	Ballina, IrelandHQ checked Sep 3, 2026	51-200	19
	“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: company website · checked Sep 3, 2026
11	Exclusive Networks IrelandIndirect evidence	Citywest, IrelandHQ checked Sep 3, 2026	11-50	16
	“Exclusive Networks is a global trusted cybersecurity specialist for digital infrastructure helping to drive the transition to a totally trusted digital future for all people and…” Source: company website · checked Sep 3, 2026
12	Viatech Security Systems LTDPartial evidence	Dublin, IrelandHQ checked Sep 3, 2026	11-50	12
	“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: company website · checked Sep 3, 2026
13	PenteorIndirect evidence	Rathcoole, IrelandHQ checked Sep 3, 2026	11-50	12
	“Our aim is to help organizations defend against cyber-attacks by finding their vulnerabilities in a proactive manner.” Source: company website · checked Sep 3, 2026
14	Ward SolutionsPartial evidence	IrelandHQ checked Sep 3, 2026	51-200	11
	“Ward Solutions is Ireland’s largest Information Security provider.” Source: company website · checked Sep 3, 2026
15	ECN TechnologiesPartial evidence	Mullingar, IrelandHQ checked Sep 3, 2026	1-10	10
	“Industrial Automation & OT Cyber Security Services” Source: company website · checked Sep 3, 2026
16	Enterprise DefencePartial evidence	Sligo, IrelandHQ checked Sep 3, 2026	11-50	10
	“Enterprise Defence are an award winning team of cyber security specialists.” Source: company website · checked Sep 3, 2026
17	Datalogix Solutions An Ekco CompanyPartial evidence	Cork, IrelandHQ checked Sep 3, 2026	1-10	10
	“DataLogiX specialise in securing Operational Technology Networks used by global organisations.” Source: company website · checked Sep 3, 2026
18	Intercept TechnologiesIndirect evidence	Dublin, IrelandHQ checked Sep 3, 2026	1-10	8
	“Intercept Technologies, the game-changer in advanced monitoring and state-of-the-art tooling, offering unparalleled identification and remediation of potential exposures and…” Source: company website · checked Sep 3, 2026
19	NOVIPartial evidence	Naas, IrelandHQ checked Sep 3, 2026	11-50	5
	“Novi delivers security-oriented IT services that reduce risk and enable growth.” Source: company website · checked Sep 3, 2026
20	Integrity360 EuropeIndirect evidence	IrelandHQ checked Sep 3, 2026	201-500	4
	“Advantio, was acquired by Integrity360 in July 2023.” Source: company website · checked Sep 3, 2026
21	SecuricentrixIndirect evidence	Dublin, IrelandHQ checked Sep 3, 2026	1-10	4
	“Attackers already know what's in your environment.” Source: company website · checked Sep 3, 2026
22	IT Security PeoplePartial evidence	Skehanagh Clarecastle, IrelandHQ checked Sep 3, 2026	1-10	4
	“IT Security People Ltd was set up in response to the surge in Cybercrime exploits and IT Security threats in the Irish market.” Source: company website · checked Sep 3, 2026
23	TEC Security IrelandPartial evidence	Dublin 24, IrelandHQ checked Sep 3, 2026	11-50	4
	“TEC Security has been installing security systems such as CCTV cameras, perimeter protection and covert surveillance for over 20 years.” Source: company website · checked Sep 3, 2026
24	Sentinel Security Systems CorkPartial evidence	Bandon, IrelandHQ checked Sep 3, 2026	11-50	2
	“Sentinel Security Systems Ltd, based in Cork, is an innovative and quality driven provider of a complete range of electronic security systems solutions including Intruder Alarms…” Source: company website · checked Sep 3, 2026

Showing 24 of 47 ics security companies based in Ireland

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Ics security companies based in Ireland at a glance

As of Sep 3, 2026

11-50Median size (employees)

DublinLargest hub · 11 HQs

102Contacts with mobile numbers

Sep 3, 2026Data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

Verified emails by last verification

0–30

31–60

61–90

278

90–180

164

180+

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 ics security companies, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Ireland whose own description of what they do matches “ics security companies”. Matching reads each company's description, not its industry code or its name.
What we exclude: Companies whose own description does not clearly place them among ics security companies, 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 an evidence 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, 496 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 3, 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

How many ics security companies are there based in Ireland?

RevenueBase identified 47 ics security companies 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 ics security companies?

Dublin leads with 11 headquartered companies, followed by Belfast (2) and Naas (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 496 verified decision-maker contacts tracked across these 47 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 3, 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.