Company lists · Data refreshed September 2026

Top 24 Appsec companies based in Ireland

RevenueBase identified 43 company matches for appsec companies associated with Ireland as of September 2026 and tracks 582 professional contacts across them, including 271 with verified work emails. Dublin is the largest hub.

This list covers company matches for appsec 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 September 21, 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 Sep 21, 2026 How this list was built
43Companies
582Contacts tracked
271Verified emails
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The 24 largest appsec companies based in Ireland

Ranked by team size
Top 24 of 43 company matches for appsec companies based in Ireland, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 21, 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 matchCork - London - New York City - Bucharest - Krakow - Belfast, IrelandHQ recorded Sep 21, 202651-200189 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
2Exact matchDublin, IrelandHQ recorded Sep 21, 202651-20095 contacts →

Exact match

“Edgescan is a unified platform for Continuous Security Testing, Exposure Management, and Penetration Testing as a Service (PTaaS).”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
3Exact matchDublin, IrelandHQ recorded Sep 21, 202611-5036 contacts →

Exact match

“We are a pure play IT security company, which allows us to focus solely on protecting your business from cyber threats.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
4Exact matchDublin2, IrelandHQ recorded Sep 21, 202651-20022 contacts →

Exact match

“In the era of AI-generated code and rapid deployment, traditional security is falling behind.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
5Exact matchBlanchardstown, IrelandHQ recorded Sep 21, 202611-5021 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 · Sep 21, 2026 · View company records in RevenueBase
6Exact matchCastlebar, IrelandHQ recorded Sep 21, 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 · Sep 21, 2026 · View company records in RevenueBase
7Exact matchCastlebar, IrelandHQ recorded Sep 21, 202611-5016 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 · Sep 21, 2026 · View company records in RevenueBase
8Exact matchPortarlington, IrelandHQ recorded Sep 21, 202611-5013 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 · Sep 21, 2026 · View company records in RevenueBase
9Exact matchDublin, IrelandHQ recorded Sep 21, 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 · Sep 21, 2026 · View company records in RevenueBase
10Exact matchIrelandHQ recorded Sep 21, 202651-20011 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
11Exact matchDublin, IrelandHQ recorded Sep 21, 202611-508 contacts →

Exact match

“7ASecurity offers Mobile, Web and Network penetration tests.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
12Exact matchCork, IrelandHQ recorded Sep 21, 202611-508 contacts →

Exact match

“Tenendo brings together a team of industry experts with vast knowledge and hands-on experience in key areas: Penetration testing and vulnerability assessment Performance and load…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
13Exact matchStranorlar, IrelandHQ recorded Sep 21, 20261-107 contacts →

Exact match

“Secora Consulting are experts in cybersecurity and risk mitigation.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
14Exact matchDublin, IrelandHQ recorded Sep 21, 20261-107 contacts →

Exact match

“At Cyberhealth, we specialise in providing cost-effective cybersecurity services tailored specifically for small to medium-sized businesses (SMBs).”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
15Exact matchDublin, IrelandHQ recorded Sep 21, 202611-505 contacts →

Exact match

“Rits Information Security is the premier independent provider of professional services in information security and real-world security in Ireland.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
16Exact matchLetterkenny, IrelandHQ recorded Sep 21, 20261-105 contacts →

Exact match

“At ITUS we believe that effective cybersecurity begins with understanding cyber risk for your business.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
17Exact matchDublin, IrelandHQ recorded Sep 21, 20261-104 contacts →

Exact match

“Attackers already know what's in your environment.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
18Exact matchDublin, IrelandHQ recorded Sep 21, 20261-104 contacts →

Exact match

“At Advice Bytes, we go beyond just advice, we deliver outcomes.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
19Exact matchDun Laoghaire, IrelandHQ recorded Sep 21, 20261-103 contacts →

Exact match

“We specialise in IT audit, penetration testing and cyber data analytics.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
20Exact matchRathdown Lower, IrelandHQ recorded Sep 21, 20261-103 contacts →

Exact match

“BeSecureOnline is cloud-based cyber security company”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
21Exact matchGalway, IrelandHQ recorded Sep 21, 20261-102 contacts →

Exact match

“We help teams build, operate, and prove trust in their cloud platforms.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
22Exact matchDublin 2, IrelandHQ recorded Sep 21, 202611-501 contacts →

Exact match

“We started this business in 2012, in order to provide a single source offering, on "best of breed" software tools, for Tier 1 and 2 customers building enterprise software…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
23Exact matchBallinasloe, IrelandHQ recorded Sep 21, 20261-101 contacts →

Exact match

“Offer cyber security services primarily in system access control and Identity Access Management.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
24Exact matchDublin, IrelandHQ recorded Sep 21, 20261-101 contacts →

Exact match

“Datavax is an accredited, highly-qualified security partner that is only in the business of testing, reporting, and providing comprehensive guidance-not repairs.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase

Showing 24 of 43 appsec companies based in Ireland

See the full list, filter by size, metro and specialty, and access 271 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Appsec companies based in Ireland at a glance

As of Sep 21, 2026
46.6%Verified-email coverage
13.5Average contacts per company
1-10Median size (employees)
41.9%Largest-city concentration · Dublin
Sep 21, 2026Page data refreshed

Companies by employee count

1-10
27
11-50
12
51-200
4

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 43 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 “appsec 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 271 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 September 21, 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 “appsec companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many appsec companies are there based in Ireland?

RevenueBase identified 43 company matches for appsec companies associated with Ireland as of September 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?

Smarttech247 tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most appsec companies?

Dublin leads with 18 company records, followed by Cork (3) 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 271 professional contacts with verified work emails tracked across these 43 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 September 21, 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.