Company lists · Data verified August 2026

Top 25 Cybersecurity investigation companies based in Ireland

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

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 44 companies tracked

There are 44 cybersecurity investigation companies headquartered in Ireland (RevenueBase, August 2026). RevenueBase tracks 1,224 professional contacts across them, including 604 with verified work emails and 237 with mobile numbers. Dublin is the largest hub.

This list covers cybersecurity investigation companies headquartered in Ireland, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.

44Companies

1,224Contacts tracked

604Verified emails

237Mobile numbers

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The 25 largest cybersecurity investigation companies based in Ireland

Ranked by team size

Top 25 of 44 cybersecurity investigation companies based in 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	Malwarebytes	Cork	501-1,000	606	330
2	Smarttech247	Belfast	51-200	188	79
3	BH Consulting	Blanchardstown	11-50	81	14
4	Trend Micro Europe	Cork	5,001-10,000	76	54
5	Threatscape	Sandyford	11-50	38	30
6	Cloudguard	Belfast	11-50	33	23
7	Commsec Cyber Security	n/a	11-50	22	8
8	Vmgroup	n/a	11-50	16	11
9	Cyber Armed Security	Dublin	11-50	14	4
10	AVR	n/a	51-200	14	2
11	ATORO	n/a	11-50	13	1
12	Penteor	Rathcoole	11-50	12	1
13	Ward Solutions	n/a	51-200	11	7
14	Enterprise Defence	Sligo	11-50	10	6
15	Intercept Technologies	Dublin	1-10	8	4
16	Secora Consulting LTD	Stranorlar	1-10	7	7
17	Cyberhealth	Dublin	1-10	7	4
18	NOVI	Dublin	11-50	5	3
19	Integrity360 Europe	n/a	201-500	4	3
20	Securicentrix	n/a	1-10	4	3
21	IT Security People	Skehanagh Clarecastle	1-10	4	3
22	Zirona IT & Cybersecurity	n/a	1-10	4	1
23	Cybersecure365	Killybegs	1-10	3	3
24	Advice Bytes	Dublin	1-10	3	1
25	Eonta Cybersecurity Compliance	n/a	1-10	2	1

Showing 25 of 44 cybersecurity investigation companies based in Ireland

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Cybersecurity investigation companies based in Ireland at a glance

As of Aug 28, 2026

1-10Median size (employees)

DublinLargest hub · 12 HQs

237Contacts with mobile numbers

1Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

5,001-10,000

Cybersecurity investigation companies by metro

Metro	Companies
Cybersecurity investigation companies in Dublin	12
Cybersecurity investigation companies in Cork	3
Cybersecurity investigation companies in Belfast	2
Cybersecurity investigation companies in Sligo	1
Cybersecurity investigation companies in Sandyford	1
Cybersecurity investigation companies in Bruckless	1
Cybersecurity investigation companies in Stranorlar	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 investigation companies”, with match quality audited by blind human judging, and headquartered in 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; 1 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 investigation companies are there based in Ireland?

There are 44 cybersecurity investigation companies headquartered in Ireland as of August 2026 (RevenueBase).

What is the largest company on this list?

Malwarebytes, headquartered in Cork, tops this list with the largest team on record.

Which city has the most cybersecurity investigation companies?

Dublin leads with 12 headquartered companies, 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 the top results, verified emails and direct dials included. Upgrading unlocks all 604 verified decision-maker contacts tracked across these 44 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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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.