Company lists · Data verified August 2026
Top 13 Cybersecurity threat detection companies based in Ireland
There are 25 cybersecurity threat detection companies headquartered in Ireland (RevenueBase, August 2026). RevenueBase tracks 940 professional contacts across them, including 506 with verified work emails and 228 with mobile numbers. Dublin is the largest hub.
This list covers cybersecurity threat detection 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.
The 13 largest cybersecurity threat detection companies based in Ireland
Ranked by team size| # | Company | Verified emails |
|---|---|---|
| 1 |  Malwarebytes | 330 |
| 2 | Trend Micro Europe | 54 |
| 3 |  Secureism | 25 |
| 4 |  Threatscape | 30 |
| 5 |  Cloudguard | 23 |
| 6 |  Commsec Cyber Security | 8 |
| 7 |  Dectar | 13 |
| 8 |  Cytidel | 11 |
| 9 |  Cyber Armed Security | 4 |
| 10 |  Securicentrix | 3 |
| 11 |  Cytekone | 3 |
| 12 | Pure IT Universe | 1 |
| 13 |  Copycat247 | 1 |
Showing 13 of 25 cybersecurity threat detection companies based in Ireland
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Cybersecurity threat detection companies based in Ireland at a glance
As of Aug 28, 2026Companies by employee count
Cybersecurity threat detection companies by metro
| Metro | Companies |
|---|---|
| Cybersecurity threat detection companies in Dublin | 8 |
| Cybersecurity threat detection companies in Cork | 2 |
| Cybersecurity threat detection companies in Wexford | 1 |
| Cybersecurity threat detection companies in Sandyford | 1 |
| Cybersecurity threat detection companies in Tralee | 1 |
| Cybersecurity threat detection companies in Bruckless | 1 |
| Cybersecurity threat detection companies in Belfast | 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 threat detection 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 threat detection companies are there based in Ireland?
There are 25 cybersecurity threat detection 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 threat detection companies?
Dublin leads with 8 headquartered companies, followed by Cork (2) and Wexford (1).
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 506 verified decision-maker contacts tracked across these 25 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.
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