Company lists · Data refreshed September 2026

Top 25 Security consulting firms based in Ireland

RevenueBase identified 71 security consulting firms headquartered in Ireland as of September 2026 and tracks 621 professional contacts across them, including 169 with verified work emails and 23 with mobile numbers. Dublin is the largest hub.

This list covers security consulting firms 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 6, 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 6, 2026 86% judged on-target in blind review
71Companies
621Contacts tracked
169Verified emails
23Mobile numbers
Explore all 71 companies → Free signup · no credit card · 500 free credits

The 25 largest security consulting firms based in Ireland

Ranked by team size
Top 25 of 71 security consulting firms based in Ireland, ranked by team size, largest first. Data refreshed Sep 6, 2026. Evidence rates how directly each company's own description names security consulting firms: 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.
#CompanyHeadquartersEmployeesContacts
1
Septimius SecurityPartial evidence
Dublin, IrelandHQ checked Sep 6, 2026201-500100

“Septimius Security stands alone as your global security partner offering: Global Presence, Local Expertise: Septimius Security is a global private security firm, combining…”

Source: company website · checked Sep 6, 2026
2
BH ConsultingPartial evidence
Dublin, IrelandHQ checked Sep 6, 202611-5081

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

Source: company website · checked Sep 6, 2026
3
ParadynPartial evidence
Sandyford, IrelandHQ checked Sep 6, 202651-20027

“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 6, 2026
4
Commsec Cyber SecurityPartial evidence
Blanchardstown, IrelandHQ checked Sep 6, 202611-5021

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

Source: company website · checked Sep 6, 2026
5Leinster, IrelandHQ checked Sep 6, 202651-20016

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

Source: company website · checked Sep 6, 2026
6
Viso Cyber SecurityPartial evidence
Dublin, IrelandHQ checked Sep 6, 202611-5015

“We Simplify Cyber Security.”

Source: company website · checked Sep 6, 2026
7
ATOROIndirect evidence
Portarlington, IrelandHQ checked Sep 6, 202611-5013

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

Source: company website · checked Sep 6, 2026
8
Ward SolutionsPartial evidence
IrelandHQ checked Sep 6, 202651-20011

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

Source: company website · checked Sep 6, 2026
9
Enterprise DefencePartial evidence
Sligo, IrelandHQ checked Sep 6, 202611-5010

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

Source: company website · checked Sep 6, 2026
10
Park 100 Fire & SecurityPartial evidence
Wexford, IrelandHQ checked Sep 6, 202611-509

“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: company website · checked Sep 6, 2026
11
KontexPartial evidence
Dublin, IrelandHQ checked Sep 6, 202651-2008

“Formed in Ireland in 2015, Kontex has grown to become a leading supplier of security technologies and services to organisations around the world.”

Source: company website · checked Sep 6, 2026
12
Intercept TechnologiesIndirect evidence
Dublin 2, IrelandHQ checked Sep 6, 20261-108

“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 6, 2026
13
Secora Consulting LTDPartial evidence
Stranorlar, IrelandHQ checked Sep 6, 20261-107

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

Source: company website · checked Sep 6, 2026
14
Tusa ITIndirect evidence
Ballycoolen, IrelandHQ checked Sep 6, 20261-106

“TUSA IT helps your business to leverage IT Solutions to keep you secure and drive your business goals.”

Source: company website · checked Sep 6, 2026
15
The Compliance TeamIndirect evidence
IrelandHQ checked Sep 6, 20261-106

“The Compliance Team is a trusted partner for growing organisations seeking expert-led, integrated compliance support.”

Source: company website · checked Sep 6, 2026
16
Cybertree EngineersPartial evidence
Dublin 18, IrelandHQ checked Sep 6, 20261-105

“Cybertree Engineers are Information Security Specialists.”

Source: company website · checked Sep 6, 2026
17
NOVIPartial evidence
Naas, IrelandHQ checked Sep 6, 202611-505

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

Source: company website · checked Sep 6, 2026
18
Ashtree Risk GroupPartial evidence
Dublin, IrelandHQ checked Sep 6, 202611-504

“Ashtree Risk Group is Ireland’s leading Investigation and Security team.”

Source: company website · checked Sep 6, 2026
19
SecuricentrixIndirect evidence
Dublin, IrelandHQ checked Sep 6, 20261-104

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

Source: company website · checked Sep 6, 2026
20
Advice BytesIndirect evidence
Dublin, IrelandHQ checked Sep 6, 20261-104

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

Source: company website · checked Sep 6, 2026
21Naas, IrelandHQ checked Sep 6, 20261-104

“SAR Consultancy is a consultancy company committed to examining security situations from diverse perspectives to identify appropriate vulnerabilities and risks for its clients…”

Source: company website · checked Sep 6, 2026
22
Integrity360 EuropeIndirect evidence
IrelandHQ checked Sep 6, 2026201-5003

“Advantio, was acquired by Integrity360 in July 2023.”

Source: company website · checked Sep 6, 2026
23Dublin, IrelandHQ checked Sep 6, 20261-103

“NeoTutum is a new age risk management company that helps clients to evidence end to end compliance with regulation & policy.”

Source: company website · checked Sep 6, 2026
24
Agoa-LtdPartial evidence
Swords, IrelandHQ checked Sep 6, 20261-102

“Cyber Security Consultancy services are delivered by a team of experienced in-house consultants.”

Source: company website · checked Sep 6, 2026
25Dublin, IrelandHQ checked Sep 6, 20261-102

“Services SWIFT CSP Compliance Independent expertise to achieve SWIFT CSP compliance, resilience, and regulatory compliance.”

Source: company website · checked Sep 6, 2026

Showing 25 of 71 security consulting firms based in Ireland

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Security consulting firms based in Ireland at a glance

As of Sep 6, 2026
1-10Median size (employees)
DublinLargest hub · 25 HQs
23Contacts with mobile numbers
Sep 6, 2026Data refreshed

Companies by employee count

1-10
42
11-50
18
51-200
7
201-500
2
501-1,000
1
1,001-5,000
1

Verified emails by last verification

0–30
162
31–60
6
61–90
0
90–180
1
180+
0

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 security consulting firms, 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 “security consulting firms”. 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 security consulting firms, 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, 169 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 6, 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.

Security consulting firms by metro

  • Security consulting firms in Dublin25

Frequently asked

How many security consulting firms are there based in Ireland?

RevenueBase identified 71 security consulting firms 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?

Septimius Security, headquartered in Rathcoole, tops this list with the largest team on record.

Which city has the most security consulting firms?

Dublin leads with 25 headquartered companies, followed by Naas (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 the top results, verified emails and direct dials included. Upgrading unlocks all 169 verified decision-maker contacts tracked across these 71 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 6, 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.