Company lists · Data verified August 2026

Top 18 Cybersecurity companies based in Dublin, Ireland

Name: Cybersecurity companies based in Dublin, Ireland
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 36 companies tracked

Our directory lists 36 cybersecurity companies based in Dublin, Ireland, with 4,697 professional contacts and 2,180 email addresses. The list was last updated in August 2026, and Dublin is the single most-represented city among the companies listed.

Cybersecurity companies provide products and services that protect systems, networks, applications, devices, and data from unauthorized access, disruption, or misuse. This list covers companies that provide cybersecurity products, services, consulting, assessments, monitoring, incident response, or related protection for digital systems and data. Ranked by team size, largest first. Data current as of August 28, 2026.

36Companies

4,697Contacts tracked

2,180Verified emails

986Mobile numbers

Unlock all 36 companies Free account · no credit card · 2 minutes

The 18 largest cybersecurity companies based in Dublin, Ireland

Ranked by team size

Top 18 of 36 cybersecurity companies based in Dublin, Ireland, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	Kaseya	Dublin	5,001-10,000	4,238	1,912
2	Nostra	Dublin	201-500	286	204
3	Enigmasoft Limited	Dublin	51-200	22	11
4	Mirror Security	Dublin	11-50	18	12
5	Cyber Armed Security	Dublin	11-50	14	4
6	Connecting Dots	Dublin	1-10	12	3
7	Fijowave Limited	Dublin	11-50	9	4
8	Intercept Technologies	Dublin	1-10	8	4
9	Pure Networks	Dublin	11-50	7	7
10	Cyberhealth	Dublin	1-10	7	4
11	Leacam Technology Consulting LTD	Dublin	1-10	7	3
12	NOVI	Dublin	11-50	5	3
13	Astris CSP	Dublin	11-50	4	2
14	Advice Bytes	Dublin	1-10	3	1
15	Cyber Risk Aware	Dublin	11-50	2	1
16	1cluster	Dublin	1-10	2	1
17	Cybercy	Dublin	1-10	2	1
18	Pure IT Universe	Dublin	1-10	1	1

Showing 18 of 36 cybersecurity companies based in Dublin, Ireland

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 2,180 reachable decision-makers.

Free account · no credit card

See all 36 companies

Cybersecurity companies based in Dublin, Ireland at a glance

As of Aug 28, 2026

1-10Median size (employees)

DublinLargest hub · 36 HQs

986Contacts with mobile numbers

17Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

51-200

201-500

5,001-10,000

Cybersecurity companies by metro in Ireland

Metro	Companies
Cybersecurity companies in Dublin	36
Cybersecurity companies in Cork	7
Cybersecurity companies in Galway	4
Cybersecurity companies in Swords	2
Cybersecurity companies in Belfast	2
Cybersecurity companies in Dun Laoghaire	2
Cybersecurity companies in Ireland	1

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “cybersecurity companies”, with match quality audited by blind human judging, and headquartered in Dublin, Ireland.
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: Contact records re-verify on a rolling cadence; 17 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many cybersecurity companies are in the directory?

The directory lists 36 cybersecurity companies based in Dublin, Ireland.

Which city has the most cybersecurity companies?

Dublin is the single most-represented city among the cybersecurity companies on the list.

How many contacts are available for cybersecurity companies?

The directory includes 4,697 professional contacts and 2,180 email addresses for the listed cybersecurity companies.

Ready to reach these companies? Verified emails and direct dials for all 36 cybersecurity companies based in Dublin, Ireland. Start with a free account, no credit card.

Get the full list

Related lists

Cybersecurity companies by geography

Browse the directory

Browse: Companies home · Cybersecurity companies in Ireland · All Ireland lists · All Cybersecurity companies lists · New lists

About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.