Company lists · Data refreshed November 2026

Top 22 Cybersecurity development companies based in Ireland

RevenueBase identified 94 company matches for cybersecurity development companies associated with Ireland as of November 2026 and tracks 1,715 professional contacts across them, including 789 with verified work emails. Dublin is the largest hub.

This list covers company matches for cybersecurity development 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
94Companies
1,715Contacts tracked
789Verified emails
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The 22 largest cybersecurity development companies based in Ireland

Ranked by team size
Top 22 of 94 company matches for cybersecurity development 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, 2026201-500249 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
2Exact matchCork - London - New York City - Bucharest - Krakow - Belfast, IrelandHQ recorded Nov 5, 202651-200206 contacts →

Exact match

“At Smarttech247 we help global companies defend against cyber crime and protect their operations.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
3Exact matchDublin, IrelandHQ recorded Nov 5, 202611-5087 contacts →

Exact match

“BH Consulting is an independent consulting firm in operation since 2004.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
4Exact matchDublin 24, IrelandHQ recorded Nov 5, 202651-20077 contacts →

Exact match

“The technology landscape may be changing every day, but with a team of internationally accredited experts right here in Ireland, HCS can navigate your organisation across its…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
5Exact 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
6Exact matchGalway, IrelandHQ recorded Nov 5, 202651-20054 contacts →

Exact match

“Intuity Technologies is an Irish technology company specialising in Data, AI, IT and Cybersecurity, headquartered in Galway.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
7Exact 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
8Exact matchDublin, IrelandHQ recorded Nov 5, 202651-20034 contacts →

Exact match

“ThinScale is securing remote and hybrid work for the world’s largest organizations worldwide.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
9Exact matchCork, IrelandHQ recorded Nov 5, 2026n/a32 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
10Exact 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
11Exact matchDublin, IrelandHQ recorded Nov 5, 202611-5024 contacts →

Exact match

“Dectar is an innovative European cyber security firm focused on proactively preventing cyberattacks and protecting the critical data at the core of every organization.”

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, IrelandHQ recorded Nov 5, 202651-20023 contacts →

Exact match

“Enigma Software Group USA LLC (”ESG”) is a privately-held international systems integrator and developer of PC security software, with offices in the United States, and the…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
14Exact matchCitywest, IrelandHQ recorded Nov 5, 202611-5020 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
15Exact matchCastlebar, IrelandHQ recorded Nov 5, 202611-5020 contacts →

Exact match

“CREST-certified offensive security and continuous exposure management, delivered through a single SaaS platform.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
16Exact matchBallycoolin, IrelandHQ recorded Nov 5, 202611-5017 contacts →

Exact match

“VMGroup is a global firm providing extensive knowledge and expertise in the areas of Cyber Security & Compliance, Digital forensics, Electronic Discovery, and IT Audits.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
17Exact matchDublin, IrelandHQ recorded Nov 5, 202611-5016 contacts →

Exact match

“We Simplify Cyber Security.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
18Exact matchCork, IrelandHQ recorded Nov 5, 20261-1015 contacts →

Exact match

“Cyber Ireland is the national cybersecurity cluster organisation which aims to position Ireland’s cybersecurity industry as a leader in Europe.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
19Exact matchCastlebar, IrelandHQ recorded Nov 5, 202611-5014 contacts →

Exact match

“Cytidel helps security teams cut through the noise and focus on the vulnerabilities that actually matter.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
20Exact matchDublin, IrelandHQ recorded Nov 5, 202611-5012 contacts →

Exact match

“Our aim is to help organizations defend against cyber-attacks by finding their vulnerabilities in a proactive manner.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
21Exact matchDublin 2, IrelandHQ recorded Nov 5, 20261-1010 contacts →

Exact match

“Intercept Technologies, the game-changer in advanced monitoring and state-of-the-art tooling, offering unparalleled identification and remediation of potential exposures and…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
22Exact matchPortarlington, IrelandHQ recorded Nov 5, 202611-5010 contacts →

Exact match

“Atoro is a cyber compliance consultancy for scaling software companies, and Europe's first ISO 42001 certified consultancy.”

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

Showing 22 of 94 cybersecurity development companies based in Ireland

See the full list, filter by size, metro and specialty, and access 789 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Cybersecurity development companies based in Ireland at a glance

As of Nov 5, 2026
46.0%Verified-email coverage
18.2Average contacts per company
1-10Median size (employees)
33.0%Largest-city concentration · Dublin
Nov 5, 2026Page data refreshed

Companies by employee count

1-10
49
11-50
30
51-200
11
201-500
2
501-1,000
1
5,001-10,000
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 94 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 “cybersecurity development 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 789 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.

Cybersecurity development companies by metro

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 “cybersecurity development companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many cybersecurity development companies are there based in Ireland?

RevenueBase identified 94 company matches for cybersecurity development 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?

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

Which city has the most cybersecurity development companies?

Dublin leads with 31 company records, followed by Cork (5) and Belfast (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 789 professional contacts with verified work emails tracked across these 94 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.