Company lists · Data refreshed October 2026
Top 25 Cyber security companies based in Ireland
RevenueBase identified 57 company matches for cyber security companies associated with Ireland as of October 2026 and tracks 1,351 professional contacts across them, including 619 with verified work emails. Dublin is the largest hub.
This list covers company matches for cyber security 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 October 1, 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.
The 25 largest cyber security companies based in Ireland
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 288 contacts → | ||||
Exact match “Nostra was established in 2006 and in that time has become one of Ireland’s most trusted providers of Managed IT and Cyber Security Services for a wide range of sectors.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase | |||||
| 2 | 189 contacts → | ||||
Exact match “At Smarttech247 we help global companies defend against cyber crime and protect their operations.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase | |||||
| 3 | 77 contacts → | ||||
Exact match “TitanHQ and Redstor have merged to launch CyberSentriq, a cybersecurity champion built for MSPs and their customers.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase | |||||
| 4 | 75 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase | |||||
| 5 | 36 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 · Oct 1, 2026 · View company records in RevenueBase | |||||
| 6 | 27 contacts → | ||||
Exact match “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…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase | |||||
| 7 | 21 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 · Oct 1, 2026 · View company records in RevenueBase | |||||
| 8 | 15 contacts → | ||||
Exact match “Exclusive Networks is a global trusted cybersecurity specialist for digital infrastructure helping to drive the transition to a totally trusted digital future for all people and…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase | |||||
| 9 | 15 contacts → | ||||
Exact match “We Simplify Cyber Security.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase | |||||
| 10 | 13 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 · Oct 1, 2026 · View company records in RevenueBase | |||||
| 11 | 12 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 · Oct 1, 2026 · View company records in RevenueBase | |||||
| 12 | 11 contacts → | ||||
Exact match “Ward Solutions is Ireland’s largest Information Security provider.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase | |||||
| 13 | 10 contacts → | ||||
Exact match “Enterprise Defence are an award winning team of cyber security specialists.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase | |||||
| 14 | 8 contacts → | ||||
Exact match “Intercept Technologies, the game-changer in advanced monitoring and state-of-the-art tooling, offering unparalleled identification and remediation of potential exposures and…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase | |||||
| 15 | 7 contacts → | ||||
Exact match “Secora Consulting are experts in cybersecurity and risk mitigation.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase | |||||
| 16 | 7 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 · Oct 1, 2026 · View company records in RevenueBase | |||||
| 17 | 7 contacts → | ||||
Exact match “Leacam offers security-first IT support services that help protect your business, minimise the number and severity of security incidents, and reduces your overall IT costs.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase | |||||
| 18 | 5 contacts → | ||||
Exact match “At ITUS we believe that effective cybersecurity begins with understanding cyber risk for your business.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase | |||||
| 19 | 5 contacts → | ||||
Exact match “Netfocus IT Solutions provides a comprehensive range of managed IT and cybersecurity services, supporting businesses in maintaining system uptime, safeguarding data, and enhancing…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase | |||||
| 20 | 5 contacts → | ||||
Exact match “Novi delivers security-oriented IT services that reduce risk and enable growth.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase | |||||
| 21 | 4 contacts → | ||||
Exact match “IT Security People Ltd was set up in response to the surge in Cybercrime exploits and IT Security threats in the Irish market.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase | |||||
| 22 | 4 contacts → | ||||
Exact match “Attackers already know what's in your environment.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase | |||||
| 23 | 4 contacts → | ||||
Exact match “At Advice Bytes, we go beyond just advice, we deliver outcomes.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase | |||||
| 24 | 4 contacts → | ||||
Exact match “Zirona was founded by Jack Foran, an IT consultant with nearly two decades of experience in implementing & managing IT infrastructure, IT services and cybersecurity, as a response…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase | |||||
| 25 | 3 contacts → | ||||
Exact match “We specialise in IT audit, penetration testing and cyber data analytics.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “cyber security companies”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 57 cyber security companies based in Ireland
See the full list, filter by size, metro and specialty, and access 619 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Cyber security companies based in Ireland at a glance
As of Oct 1, 2026Companies by employee count
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 57 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 “cyber security 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 619 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 October 1, 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 “cyber security companies”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many cyber security companies are there based in Ireland?
RevenueBase identified 57 company matches for cyber security companies associated with Ireland as of October 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?
Nostra tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most cyber security companies?
Dublin leads with 18 company records, followed by Belfast (2) and Galway (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 619 professional contacts with verified work emails tracked across these 57 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 October 1, 2026.
Ready to reach these companies? Verified emails and direct dials for all 57 cyber security companies based in Ireland. Start with a free account, no credit card.
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Browse the directory
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.
More company lists
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Company intelligence · public preview
Top 25 cyber security companies based in Ireland
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 57 matching company records for cyber security companies based in Ireland, with 1,351 tracked contacts and 619 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: October 1, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 cyber security companies based in Ireland
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  Nostranostra.ieHQ: Dublin 12, IrelandReported employees: 201-500 | Dublin 12, Ireland | 201-500 | Exact match | 288 contacts → |
“Nostra was established in 2006 and in that time has become one of Ireland’s most trusted providers of Managed IT and Cyber Security Services for a wide range of sectors.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Smarttech247smarttech247.comHQ: Cork - London - New York City - Bucharest - Krakow - Belfast, IrelandReported employees: 51-200 | Cork - London - New York City - Bucharest - Krakow - Belfast, Ireland | 51-200 | Exact match | 189 contacts → |
“At Smarttech247 we help global companies defend against cyber crime and protect their operations.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Titanhqcybersentriq.comHQ: Galway, IrelandReported employees: 51-200 | Galway, Ireland | 51-200 | Exact match | 77 contacts → |
“TitanHQ and Redstor have merged to launch CyberSentriq, a cybersecurity champion built for MSPs and their customers.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Trend Micro Europetrendmicro.com HQ: Cork, IrelandReported employees: 5,001-10,000 | Cork, Ireland | 5,001-10,000 | Exact match | 75 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 5 |  Threatscapethreatscape.comHQ: Dublin, IrelandReported employees: 11-50 | Dublin, Ireland | 11-50 | Exact match | 36 contacts → |
“We are a pure play IT security company, which allows us to focus solely on protecting your business from cyber threats.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Paradynparadyn.ieHQ: Sandyford, IrelandReported employees: 51-200 | Sandyford, Ireland | 51-200 | Exact match | 27 contacts → |
“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…” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Commsec Cyber Securitycommsec.ieHQ: Blanchardstown, IrelandReported employees: 11-50 | Blanchardstown, Ireland | 11-50 | Exact match | 21 contacts → |
“CommSec is an Irish cyber security company helping organisations protect their systems, data, and operations against modern cyber threats.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Exclusive Networks Irelandexclusive-networks.comHQ: Citywest, IrelandReported employees: 11-50 | Citywest, Ireland | 11-50 | Exact match | 15 contacts → |
“Exclusive Networks is a global trusted cybersecurity specialist for digital infrastructure helping to drive the transition to a totally trusted digital future for all people and…” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Viso Cyber Securityviso.ieHQ: Dublin, IrelandReported employees: 11-50 | Dublin, Ireland | 11-50 | Exact match | 15 contacts → |
“We Simplify Cyber Security.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  ATOROatoro.ioHQ: Portarlington, IrelandReported employees: 11-50 | Portarlington, Ireland | 11-50 | Exact match | 13 contacts → |
“Atoro is a cyber compliance consultancy for scaling software companies, and Europe's first ISO 42001 certified consultancy.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Penteorpenteor.comHQ: Dublin, IrelandReported employees: 11-50 | Dublin, Ireland | 11-50 | Exact match | 12 contacts → |
“Our aim is to help organizations defend against cyber-attacks by finding their vulnerabilities in a proactive manner.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Ward Solutionsward.ie HQ: IrelandReported employees: 51-200 | Ireland | 51-200 | Exact match | 11 contacts → |
“Ward Solutions is Ireland’s largest Information Security provider.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Enterprise Defenceenterprisedefence.com HQ: Sligo, IrelandReported employees: 11-50 | Sligo, Ireland | 11-50 | Exact match | 10 contacts → |
“Enterprise Defence are an award winning team of cyber security specialists.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Intercept Technologiesintercept.ieHQ: Dublin 2, IrelandReported employees: 1-10 | Dublin 2, Ireland | 1-10 | Exact match | 8 contacts → |
“Intercept Technologies, the game-changer in advanced monitoring and state-of-the-art tooling, offering unparalleled identification and remediation of potential exposures and…” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Secora Consulting LTDsecoraconsulting.comHQ: Stranorlar, IrelandReported employees: 1-10 | Stranorlar, Ireland | 1-10 | Exact match | 7 contacts → |
“Secora Consulting are experts in cybersecurity and risk mitigation.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Cyberhealthcyberhealth.ieHQ: Dublin, IrelandReported employees: 1-10 | Dublin, Ireland | 1-10 | Exact match | 7 contacts → |
“At Cyberhealth, we specialise in providing cost-effective cybersecurity services tailored specifically for small to medium-sized businesses (SMBs).” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Leacam Technology Consulting LTDleacam.ieHQ: Dublin, IrelandReported employees: 1-10 | Dublin, Ireland | 1-10 | Exact match | 7 contacts → |
“Leacam offers security-first IT support services that help protect your business, minimise the number and severity of security incidents, and reduces your overall IT costs.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Itus Secure Technologiesitus-tech.comHQ: Letterkenny, IrelandReported employees: 1-10 | Letterkenny, Ireland | 1-10 | Exact match | 5 contacts → |
“At ITUS we believe that effective cybersecurity begins with understanding cyber risk for your business.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Netfocus IT Solutionsnetfocus.ieHQ: Naas, IrelandReported employees: 1-10 | Naas, Ireland | 1-10 | Exact match | 5 contacts → |
“Netfocus IT Solutions provides a comprehensive range of managed IT and cybersecurity services, supporting businesses in maintaining system uptime, safeguarding data, and enhancing…” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  NOVInovi.ieHQ: Naas, IrelandReported employees: 11-50 | Naas, Ireland | 11-50 | Exact match | 5 contacts → |
“Novi delivers security-oriented IT services that reduce risk and enable growth.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  IT Security Peopleitsp.ieHQ: Clarecastle, IrelandReported employees: 1-10 | Clarecastle, Ireland | 1-10 | Exact match | 4 contacts → |
“IT Security People Ltd was set up in response to the surge in Cybercrime exploits and IT Security threats in the Irish market.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Securicentrixsecuricentrix.comHQ: Dublin, IrelandReported employees: 1-10 | Dublin, Ireland | 1-10 | Exact match | 4 contacts → |
“Attackers already know what's in your environment.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Advice Bytesadvicebytes.comHQ: Dublin, IrelandReported employees: 1-10 | Dublin, Ireland | 1-10 | Exact match | 4 contacts → |
“At Advice Bytes, we go beyond just advice, we deliver outcomes.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Zirona IT & Cybersecurityzirona.ieHQ: Dublin 15, IrelandReported employees: 1-10 | Dublin 15, Ireland | 1-10 | Exact match | 4 contacts → |
“Zirona was founded by Jack Foran, an IT consultant with nearly two decades of experience in implementing & managing IT infrastructure, IT services and cybersecurity, as a response…” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Redblue Globalredblue-global.comHQ: Dun Laoghaire, IrelandReported employees: 1-10 | Dun Laoghaire, Ireland | 1-10 | Exact match | 3 contacts → |
“We specialise in IT audit, penetration testing and cyber data analytics.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 57 company matches
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Cyber security companies: dataset insights
October 1, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
57 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
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 57 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: October 1, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for cyber security companies?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many cyber security companies did RevenueBase find based in Ireland?
The saved snapshot records 57 matching company records, 1,351 tracked contacts and 619 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: October 1, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Cyber security companies by geography
- Cyber security companies based in Buenos Aires, Argentina
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- Cyber security companies based in Canberra, Australia
- Cyber security companies based in Melbourne, Australia
- Cyber security companies based in Sydney, Australia
- Cyber security companies based in Belo Horizonte, Brazil
- Cyber security companies based in Brasilia, Brazil
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- Cyber security companies based in Sao Paulo, Brazil
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Browse the directory
Cite this list
RevenueBase Data Team. Top 25 cyber security companies based in Ireland. Snapshot: October 1, 2026. https://revenuebase.ai/companies/cyber-security-companies/ireland.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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- Cyber security companies based in Buenos Aires, Argentina
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Company intelligence · public preview
Top 25 cyber security companies based in Ireland
RevenueBase records 57 matching company records for cyber security companies based in Ireland, with 1,351 tracked contacts and 619 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: October 1, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 cyber security companies based in Ireland
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Nostranostra.ie HQ: Dublin 12, IrelandReported employees: 201-500 | Dublin 12, Ireland | 201-500 | Exact match | 288 contacts → |
“Nostra was established in 2006 and in that time has become one of Ireland’s most trusted providers of Managed IT and Cyber Security Services for a wide range of sectors.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Smarttech247smarttech247.com HQ: Cork - London - New York City - Bucharest - Krakow - Belfast, IrelandReported employees: 51-200 | Cork - London - New York City - Bucharest - Krakow - Belfast, Ireland | 51-200 | Exact match | 189 contacts → |
“At Smarttech247 we help global companies defend against cyber crime and protect their operations.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Titanhqcybersentriq.com HQ: Galway, IrelandReported employees: 51-200 | Galway, Ireland | 51-200 | Exact match | 77 contacts → |
“TitanHQ and Redstor have merged to launch CyberSentriq, a cybersecurity champion built for MSPs and their customers.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Trend Micro Europetrendmicro.com HQ: Cork, IrelandReported employees: 5,001-10,000 | Cork, Ireland | 5,001-10,000 | Exact match | 75 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 5 | Threatscapethreatscape.com HQ: Dublin, IrelandReported employees: 11-50 | Dublin, Ireland | 11-50 | Exact match | 36 contacts → |
“We are a pure play IT security company, which allows us to focus solely on protecting your business from cyber threats.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Paradynparadyn.ie HQ: Sandyford, IrelandReported employees: 51-200 | Sandyford, Ireland | 51-200 | Exact match | 27 contacts → |
“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…” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Commsec Cyber Securitycommsec.ie HQ: Blanchardstown, IrelandReported employees: 11-50 | Blanchardstown, Ireland | 11-50 | Exact match | 21 contacts → |
“CommSec is an Irish cyber security company helping organisations protect their systems, data, and operations against modern cyber threats.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Exclusive Networks Irelandexclusive-networks.com HQ: Citywest, IrelandReported employees: 11-50 | Citywest, Ireland | 11-50 | Exact match | 15 contacts → |
“Exclusive Networks is a global trusted cybersecurity specialist for digital infrastructure helping to drive the transition to a totally trusted digital future for all people and…” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Viso Cyber Securityviso.ie HQ: Dublin, IrelandReported employees: 11-50 | Dublin, Ireland | 11-50 | Exact match | 15 contacts → |
“We Simplify Cyber Security.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | ATOROatoro.io HQ: Portarlington, IrelandReported employees: 11-50 | Portarlington, Ireland | 11-50 | Exact match | 13 contacts → |
“Atoro is a cyber compliance consultancy for scaling software companies, and Europe's first ISO 42001 certified consultancy.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Penteorpenteor.com HQ: Dublin, IrelandReported employees: 11-50 | Dublin, Ireland | 11-50 | Exact match | 12 contacts → |
“Our aim is to help organizations defend against cyber-attacks by finding their vulnerabilities in a proactive manner.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Ward Solutionsward.ie HQ: IrelandReported employees: 51-200 | Ireland | 51-200 | Exact match | 11 contacts → |
“Ward Solutions is Ireland’s largest Information Security provider.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Enterprise Defenceenterprisedefence.com HQ: Sligo, IrelandReported employees: 11-50 | Sligo, Ireland | 11-50 | Exact match | 10 contacts → |
“Enterprise Defence are an award winning team of cyber security specialists.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Intercept Technologiesintercept.ie HQ: Dublin 2, IrelandReported employees: 1-10 | Dublin 2, Ireland | 1-10 | Exact match | 8 contacts → |
“Intercept Technologies, the game-changer in advanced monitoring and state-of-the-art tooling, offering unparalleled identification and remediation of potential exposures and…” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Secora Consulting LTDsecoraconsulting.com HQ: Stranorlar, IrelandReported employees: 1-10 | Stranorlar, Ireland | 1-10 | Exact match | 7 contacts → |
“Secora Consulting are experts in cybersecurity and risk mitigation.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Cyberhealthcyberhealth.ie HQ: Dublin, IrelandReported employees: 1-10 | Dublin, Ireland | 1-10 | Exact match | 7 contacts → |
“At Cyberhealth, we specialise in providing cost-effective cybersecurity services tailored specifically for small to medium-sized businesses (SMBs).” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Leacam Technology Consulting LTDleacam.ie HQ: Dublin, IrelandReported employees: 1-10 | Dublin, Ireland | 1-10 | Exact match | 7 contacts → |
“Leacam offers security-first IT support services that help protect your business, minimise the number and severity of security incidents, and reduces your overall IT costs.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Itus Secure Technologiesitus-tech.com HQ: Letterkenny, IrelandReported employees: 1-10 | Letterkenny, Ireland | 1-10 | Exact match | 5 contacts → |
“At ITUS we believe that effective cybersecurity begins with understanding cyber risk for your business.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Netfocus IT Solutionsnetfocus.ie HQ: Naas, IrelandReported employees: 1-10 | Naas, Ireland | 1-10 | Exact match | 5 contacts → |
“Netfocus IT Solutions provides a comprehensive range of managed IT and cybersecurity services, supporting businesses in maintaining system uptime, safeguarding data, and enhancing…” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | NOVInovi.ie HQ: Naas, IrelandReported employees: 11-50 | Naas, Ireland | 11-50 | Exact match | 5 contacts → |
“Novi delivers security-oriented IT services that reduce risk and enable growth.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | IT Security Peopleitsp.ie HQ: Clarecastle, IrelandReported employees: 1-10 | Clarecastle, Ireland | 1-10 | Exact match | 4 contacts → |
“IT Security People Ltd was set up in response to the surge in Cybercrime exploits and IT Security threats in the Irish market.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Securicentrixsecuricentrix.com HQ: Dublin, IrelandReported employees: 1-10 | Dublin, Ireland | 1-10 | Exact match | 4 contacts → |
“Attackers already know what's in your environment.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Advice Bytesadvicebytes.com HQ: Dublin, IrelandReported employees: 1-10 | Dublin, Ireland | 1-10 | Exact match | 4 contacts → |
“At Advice Bytes, we go beyond just advice, we deliver outcomes.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Zirona IT & Cybersecurityzirona.ie HQ: Dublin 15, IrelandReported employees: 1-10 | Dublin 15, Ireland | 1-10 | Exact match | 4 contacts → |
“Zirona was founded by Jack Foran, an IT consultant with nearly two decades of experience in implementing & managing IT infrastructure, IT services and cybersecurity, as a response…” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Redblue Globalredblue-global.com HQ: Dun Laoghaire, IrelandReported employees: 1-10 | Dun Laoghaire, Ireland | 1-10 | Exact match | 3 contacts → |
“We specialise in IT audit, penetration testing and cyber data analytics.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 57 company matches
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Cyber security companies: dataset insights
October 1, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
57 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
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 57 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: October 1, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for cyber security companies?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many cyber security companies did RevenueBase find based in Ireland?
The saved snapshot records 57 matching company records, 1,351 tracked contacts and 619 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: October 1, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
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Cite this list
RevenueBase Data Team. Top 25 cyber security companies based in Ireland. Snapshot: October 1, 2026. https://revenuebase.ai/companies/cyber-security-companies/ireland.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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