Top Penetration Testing Companies in Ireland 2026

This guide covers providers for organizations in Ireland. Buying from the United States? See our list of top penetration testing companies in the U.S. or DeepStrike's penetration testing services. Buying for Great Britain or Northern Ireland? See the penetration testing companies in the UK.

• Publisher's own service: DeepStrike (listed first as the publisher) for human-led application, cloud, and infrastructure testing with reproduction evidence and remediation guidance.
• Best for Enterprise: Integrity360 provides 24/7 managed security MDR/SOC with CREST certified testers suited to large, regulated organizations.
• Best for SMBs: CommSec, a Dublin-based provider of human-led penetration testing, which it describes as CREST accredited, focused on SMEs and mid market clients.
• Best for Compliance Driven Orgs: PFH Technology Group, an established Irish IT and security provider that is part of the Ricoh Group and states CREST and CHECK memberships (verify certificates); suits organisations buying testing alongside IT and managed services.
• Best for Offensive Security Red Teams: Penteor, specialist red teamers and continuous pen testers with a proactive focus on uncovering hidden vulnerabilities.
• How to Choose: Look past buzzwords: verify certifications (OSCP, CISSP, CREST), examine real world experience, check methodology depth (not just automated scans), and ensure alignment with your compliance needs.

Choosing the right penetration testing partner is critical. This guide compares Irish and globally active firms that serve Irish clients on technical expertise, service scope, industry experience, compliance alignment, reporting quality, reach, reputation, innovation, and real world use cases. DeepStrike publishes this guide and lists itself first; the list order is not a quality ranking.

Disclosure: DeepStrike, the publisher of this guide, is a penetration testing provider and is included in this list. Weigh our entry the way you would any vendor's description of its own service, and compare scope, sample reports and references for every provider before you buy. DeepStrike publishes this list and lists itself first; list order is not a quality ranking.

How We Selected the Top Penetration Testing Companies in Ireland 2026

How we built this Ireland list: We looked for providers with an Irish office or Irish operating entity that publish penetration testing services, checked their service and contact pages on 3 November 2026, and checked CREST's public marketplace for the accreditations they claim. Ireland's market is shaped by Dublin-based managed security groups (Integrity360, Ekco, Smarttech247), Big Four advisory, local specialists, and an Irish PTaaS platform (Edgescan); entries note where a claimed accreditation could not be matched. We did not test the providers ourselves.

We compared each penetration testing provider against the criteria below. Key evaluation criteria included:

• Technical Expertise & Certifications: We checked for industry recognized certifications OSCP, CREST, CISSP, etc. and hands on experience. Providers like CommSec highlight CREST certified pen testers with 10+ years’ experience. DeepStrike describes human-led testing with reproduction evidence, root-cause information, and remediation guidance. The presence of senior, certified testers is a strong signal of quality.
• Service Scope & Specialization: We looked at the range of testing services web, mobile, cloud, IoT, red teaming, etc. each company offers. For example, Penteor's portfolio spans web, mobile, API, cloud, red team operations and LLM/AI red teaming, with client testimonials mentioning phishing and social engineering exercises. Comprehensive offerings matter, but so does depth in your priority area e.g. cloud security vs. application pentests.
• Industry Experience: We favored companies with experience in relevant sectors. Firms trusted by financial services, healthcare, or government, like Ward Solutions (now part of Ekco), which has supported Irish public and regulated clients for more than two decades, stand out for sector knowledge. Likewise, Integrity360's track record with critical infrastructure and finance is backed by seven security operations centres across Europe and South Africa.
• Compliance & Standards Alignment: Ireland's GDPR obligations, DORA (in application since January 2025), the EU NIS2 directive and sector specific rules drive demand for pentesting. Providers that explicitly address these, e.g. CommSec's stated CREST accredited testing or PFH's stated CREST and CHECK memberships, are relevant, provided buyers verify the certificates. We checked alignment with common frameworks ISO 27001, PCI DSS, TLPT and evidence of audit readiness.
• Transparency & Reporting Quality: Clear, actionable reporting is crucial. We looked for providers emphasizing high quality results over checkbox compliance. As CommSec warns, not all pen tests are the same; you need a partner who delivers depth and value, not a compliance tick box exercise. Companies that showcase detailed remediation guidance (CommSec’s clients report clear and actionable reports) are more useful.
• Global Reach & Regional Presence: We considered Irish headquartered firms as well as global players with local presence. For example, EY Ireland has Dublin offices and global resources, Integrity360 has grown from Dublin into a multi-country group with seven SOCs across Europe and South Africa, while specialists like CommSec and Edgescan remain Dublin based. Multinational firms offer scale, whereas domestic firms often provide greater flexibility and local market understanding.
• Client Trust & Reputation: We reviewed client testimonials, industry awards, and accreditations. Smarttech247's recognition, including Deloitte Fast 50, a 2025 Cyber Security Excellence Award and Representative Vendor listings in Gartner's 2024 and 2025 Market Guides for MDR, indicates a strong reputation. As with any cybersecurity company, awards are only a starting point, so we also valued third party reviews and client references.
• Innovation & Tooling: Adoption of modern approaches continuous testing platforms, automation, threat intelligence integration was assessed. Smarttech247’s AI driven VisionX platform and Edgescan’s hybrid automated/validated PTaaS approach stand out for reducing noise and prioritizing risks. Innovation in methodology or tools can differentiate providers.
• Use Cases Enterprise vs SMB: We noted which types of clients a provider serves. Large consultancies like EY and Integrity360 are geared toward enterprise scale projects, whereas boutique firms like Penteor or CommSec cater to SMEs or tech startups. This informed our Best For recommendations below.

Below are the providers we selected, with documented strengths and buying considerations.

How to Choose the Right Penetration Testing Provider

When vetting pentest vendors, focus on substance over marketing:

• Common Mistakes: Do not choose based on price alone or flashy claims. Beware offerings that are little more than automated scans. As CommSec notes, many organizations discover too late that not all pen tests are the same. A true penetration test requires manual exploitation by skilled testers. Also, avoid one size fits all packages that ignore your specific risk areas or compliance requirements.
• Red Flags: Watch out for providers without verifiable credentials or portfolio. A lack of certifications e.g. CREST or OSCP or having only junior testers may indicate limited expertise. Similarly, vague scopes testing as needed without clear methodology or unwillingness to provide examples of past reports can signal poor quality. If a company promises guaranteed breach exploitation or hyperbole like industry leading without evidence, be cautious.
• What Matters vs. Marketing: Focus on factors that truly impact quality. Check if the provider publishes its methodology or testing frameworks. Do they use up to date tools and actively research new threats? Assess sample reports for clarity. Emphasize teams with senior consultants who understand your industry’s needs for instance, testing logins and authentication flows is critical in identity centric sectors see infostealer malware and account takeover trends. Ultimately, choose a partner that aligns with your security goals, whether that’s enterprise grade assurance or agile threat hunting.

By following these criteria technical chops, coverage breadth, compliance savvy, and solid process you can shortlist providers that deliver real value rather than buzz.

Ireland regulatory and procurement context

NIS2 status (checked 3 November 2026): Ireland has not yet transposed NIS2. As of 7 October 2026 the National Cyber Security Bill was still being drafted (Law Society Gazette), and on 8 July 2026 the European Commission referred Ireland to the EU Court of Justice over the delay. The bill is expected to make the National Cyber Security Centre (NCSC) the national competent authority and CSIRT; until it passes, the 2018 NIS1 regulations remain the baseline for operators of essential services.

Financial services: DORA has applied since 17 January 2025, and the Central Bank of Ireland is the designated authority for both TIBER-IE, adopted in 2019, and DORA threat-led penetration testing. Firms selected for TLPT need providers that can work within that framework; a standard pentest does not substitute for it.

Public sector, data, and accreditation: Public service bodies work to the NCSC's Cyber Security Baseline Standards, first published in November 2021 and revised in November 2022, and the NCSC has issued guidelines on cyber security specifications for ICT procurement. Because many technology companies run their EU operations from Ireland, the Data Protection Commission is the lead GDPR supervisor for many of them, so define where test evidence containing personal data is stored. Several providers below hold CREST accreditation, which you can confirm on CREST's public register; CHECK, which some also cite, is a UK government scheme.

Top Penetration Testing Companies in Ireland 2026

1. DeepStrike: Application testing and remediation collaboration

Public offering: DeepStrike's penetration testing services describe human-led testing across applications, cloud environments, and infrastructure, supported by a findings and collaboration platform. Its public process covers planning, reconnaissance, vulnerability discovery, controlled exploitation, reporting, and technical support. Published reports include reproduction steps, remediation guidance, and root-cause information; the proposal should define exact coverage and commercial terms.

Ireland relevance: Founded in 2016, DeepStrike LLC is headquartered in Newark, Delaware, has 11–50 employees, and also publishes a business address in Dubai, UAE (IFZA Business Park). It delivers testing remotely for Irish clients; define tester locations, permitted subcontracting, and data-handling restrictions in the engagement agreement.

Team certifications: OSCP, OSWE, OSEP, OSWP, GXPN, GWAPT, eCPPT, eMAPT, eWPT, CREST CPSA, CRTP, CRTE, and Microsoft Azure Security Engineer Associate, as shown on DeepStrike's services page.

Official sources: Pricing , Contact Us

Buyer fit: Engineering teams that need application, cloud, or infrastructure testing with direct remediation collaboration.

2. EY Ireland: Penetration testing within a Big Four cybersecurity practice

Public offering: EY Ireland's cybersecurity page lists penetration testing and red teaming within its next generation security operations and response services, alongside threat detection and response, advanced incident response, cyber threat intelligence, and threat and vulnerability management. The wider practice covers cybersecurity strategy, data privacy, digital identity, cloud security architecture, and operational technology security. Testing scope, methodology, and deliverables are agreed per engagement.

Ireland relevance: EY lists Irish offices in Dublin, Cork, Galway, Limerick, and Waterford. CREST's public marketplace lists "Ernst & Young" with penetration testing accreditation; confirm which EY entity holds it and who will deliver your test, and define tester locations and data-handling terms in the engagement letter.

Official sources: https://www.ey.com/en_ie/services/consulting/cybersecurity; https://www.ey.com/en_ie/locations/ireland

Buyer fit: Large or regulated organisations that want penetration testing coordinated with wider risk, compliance, and security operations advisory.

What sets it apart in Ireland: A Big Four firm with five Irish offices whose testing sits inside security operations and response advisory, which suits regulated firms that want one adviser across risk and testing.

3. Integrity360: CREST-accredited testing alongside managed security

Public offering: Integrity360 describes CREST-accredited penetration testing of networks, applications, cloud environments, identities, and connected devices, combining automated tools with manual testing to show attack paths, business impact, and remediation guidance. Published test types include infrastructure, Active Directory, web application, web API, Wi-Fi, mobile, and IoT testing, with red team exercises and social engineering offered as separate services. It also lists continuous retest options and post-testing guidance.

Ireland relevance: Integrity360's contact page lists its head office at Termini, 3 Arkle Road, Sandyford, Dublin 18, and CREST's public marketplace lists Integrity360 in Ireland with penetration testing accreditation. As a multi-country group, confirm which team and location will perform the test and how test data is handled.

Official sources: https://www.integrity360.com/penetration-testing; https://www.integrity360.com/contact-us

Buyer fit: Mid-market and enterprise organisations that want penetration testing from a provider that also runs managed detection and response.

What sets it apart in Ireland: A Dublin-headquartered group whose penetration testing accreditation appears on CREST's marketplace and which also runs its own MDR service across several countries.

4. CommSec Cyber Security: Dublin-based human-led testing

Public offering: CommSec describes human-led penetration testing delivered by CREST-certified testers, covering network, web application, cloud, wireless, and mobile app testing, plus Active Directory and assumed breach assessments. Its published six-step methodology ends with a report of findings, remediation recommendations, and the testing approach used. CommSec also offers managed detection and response, digital forensics, and governance, risk, and compliance services.

Ireland relevance: CommSec's contact page lists Suite B108, The LINC Building, TUD Blanchardstown, Dublin D15 VPT3. It describes its testing as CREST-accredited, but we could not match the CommSec name in CREST's public marketplace in November 2026, so ask for the accreditation certificate and accredited entity name, and define tester locations and data handling in the agreement.

Official sources: https://commsec.ie/services/penetration-testing/; https://commsec.ie/contact/

Buyer fit: Irish SMEs, mid-market companies, and public bodies that want a local provider for scoped manual testing.

What sets it apart in Ireland: A Dublin specialist focused on human-led testing for SMEs, mid-market firms, and public bodies; ask for its CREST certificate, as the name did not match CREST's marketplace when we checked.

5. PFH Technology Group (Ricoh Group): Testing within a broad IT services provider

Public offering: PFH lists penetration testing within a cyber security portfolio aligned to the NIST Cybersecurity Framework, alongside consult and advise, design and deploy, assess and identify, and managed security services. Its penetration testing page describes testing as a snapshot of an organisation's security profile and offers a penetration testing data sheet. PFH presents itself as part of the Ricoh Group.

Ireland relevance: PFH publishes offices in Sandyford (Dublin 18), Little Island (Cork), and Galway. It states membership of CREST and CHECK (a UK NCSC scheme), but we could not match the PFH name in CREST's public marketplace in November 2026; ask for current certificates and define tester locations and subcontracting in the agreement.

Official sources: https://www.pfh.ie/solutions/cyber-security-2/penetration-testing/; https://www.pfh.ie/contact/

Buyer fit: Organisations that already buy IT infrastructure or managed services and want testing from the same provider.

What sets it apart in Ireland: An Irish IT services provider within the Ricoh Group with offices in Dublin, Cork, and Galway, best suited to buyers who already use it for IT or managed services.

6. Ekco (formerly Ward Solutions): Testing with managed cloud and SOC services

Public offering: Ekco offers penetration tests as a once-off or on a regular basis, using OSSTMM, OWASP, NIST, and PTES methodologies. Published scope covers web and mobile apps, infrastructure, red team testing, legacy apps, cloud systems, end-user devices, wireless networks, and remote access services. Its cyber testing line also lists social engineering testing, adversary emulation, and ethical hacking as a service.

Ireland relevance: Ekco lists its headquarters at 6-8 College Green, Dublin 2, with further Irish offices in Baldonnell, Malahide, and Cork. CREST's public marketplace lists Ekco in Ireland with penetration testing, incident response, and SOC accreditations; define tester locations and data handling in the agreement.

Official sources: https://www.ek.co/services/security/cyber-testing/penetration-testing/; https://www.ek.co/contact/

Buyer fit: Organisations that want penetration testing alongside managed cloud, SOC, or incident response services.

What sets it apart in Ireland: The former Ward Solutions, a long-running Irish security practice now inside a managed cloud provider, with penetration testing, incident response, and SOC accreditations listed on CREST's marketplace.

7. Pure Networks (formerly Alphazar): Manual and autonomous testing

Public offering: Pure Networks offers both manual and autonomous penetration testing. As a Horizon3.ai partner it delivers NodeZero autonomous testing across internal, external, cloud, and hybrid environments, handling deployment, onboarding, and support, either as a one-off assessment or a continuous programme. The company describes itself as a cyber security reseller that also provides professional services, managed services, and training.

Ireland relevance: Pure Networks lists its address at Unit 39, Block G, Southern Cross Business Park, Co. Wicklow, and serves Ireland and the UK. Agree which findings come from autonomous tooling and which from manual testing, plus tester locations and data handling, in the agreement.

Official sources: https://purenetworks.ie/solutions/pen-testing/; https://purenetworks.ie/contact-us/

Buyer fit: Organisations that want continuous autonomous validation of their network, with manual testing added where needed.

What sets it apart in Ireland: A Wicklow-based provider that combines Horizon3.ai NodeZero autonomous testing with manual pentests, useful for frequent network validation.

8. Penteor: Boutique offensive security and AI red teaming

Public offering: Penteor, founded in 2018, lists web and mobile application testing, API assessment, internal web application testing, internal and external infrastructure, cloud security, red team operations, LLM and AI red teaming, and hardware and IoT testing, plus Microsoft 365, Google Workspace, and Kubernetes audits. It combines expert-led testing with AI-driven automation and shares findings in real time as testing progresses. Its contact page states that engagements include a complimentary retest within 30 business days.

Ireland relevance: Penteor names its operating entity as Penteor Technology Limited but does not publish a street address; its contact page lists business hours in Eastern European time and the site is offered in English and Romanian. Irish buyers should confirm the contracting entity, tester locations, and data-handling terms in the agreement.

Official sources: https://penteor.com/en/; https://penteor.com/en/contact/

Buyer fit: Small and growing organisations that want hands-on testing, red teaming, or AI application testing from a boutique team.

What sets it apart in Ireland: A boutique that lists LLM and AI red teaming, but it publishes no Irish street address and lists Eastern European business hours, so confirm the contracting entity and tester locations.

9. Smarttech247: Offensive security alongside MDR

Public offering: Smarttech247's offensive security services include penetration testing, red teaming, social engineering, and web application testing. Its penetration testing page describes infrastructure testing of internal and external network components and scenario-based testing that shows how weaknesses chain together. The company's core offering is managed detection and response built on its VisionX platform and a 24/7 SOC.

Ireland relevance: Smarttech247 lists locations in Cork, Bucharest, Belfast, Krakow, New York City, Dubai, and Zurich, with an Irish phone number, and its penetration testing page displays ISO 27001 and Cyber Essentials marks. With several delivery locations, define which team performs the test and where data is processed.

Official sources: https://www.smarttech247.com/offensive-security/penetration-testing-services; https://www.smarttech247.com/talk-to-an-expert

Buyer fit: Organisations that want penetration testing from the same provider that runs their managed detection and response.

What sets it apart in Ireland: A Cork-based MDR provider that adds offensive testing to its managed service; best when you want testing and monitoring from one supplier.

10. Edgescan: Subscription PTaaS with human validation

Public offering: Edgescan describes its penetration testing as a service (PTaaS) as a hybrid of automated scanning and human assessment by CREST- and OSCP-certified testers, sold as an annual subscription. Published variants cover API, application, and network or device PTaaS, with on-demand testing, unlimited retests, risk rating, and remediation guidance. The wider platform includes DAST, API security testing, network vulnerability management, mobile application testing, and attack surface management.

Ireland relevance: Edgescan lists an Irish office at Unit 701 Northwest Business Park, Ballycoolin, Dublin 15, and a New York office. CREST's public marketplace lists BCC Risk Advisory Ltd (Edgescan) in Ireland with penetration testing accreditation; define tester locations and data handling in the agreement.

Official sources: https://www.edgescan.com/the-platform/penetration-testing-as-a-service/; https://www.edgescan.com/contact-us/

Buyer fit: Teams that want continuous vulnerability assessment with on-demand human testing under a subscription.

What sets it apart in Ireland: A Dublin-based PTaaS platform sold as an annual subscription that combines continuous automated assessment with human validation, listed on CREST's marketplace under BCC Risk Advisory.

Enterprise vs SMB: Which Type of Provider Do You Need?

Enterprise firms e.g. financial institutions, tech multinationals often require full service providers that can scale 24/7 SOC support, global incident response, and auditors on staff. For them, firms like EY or Integrity360 are appealing because they bring large teams and multi disciplinary expertise. The trade off is higher cost and slower turnaround. Large companies also benefit from vendors with deep compliance knowledge auditor partnerships, ISO/IEC certifications to meet regulators’ expectations.

Boutique and SMB friendly firms such as Penteor and CommSec can offer direct access to senior testers and flexible scoping. They often provide more personal attention and niche expertise. A small or mid market business might not need a giant SOC contract; they may prefer a targeted pentest by senior ethical hackers. These vendors can often engage faster and adapt scope to your exact needs, trading some breadth for depth.

Cost vs Value: Pricing models differ: some providers quote per engagement, others sell credits or subscriptions. Ask each shortlisted provider to price the same defined scope, including reporting and retesting, before comparing. Continuous pentesting programs (credits or subscriptions offered by many PTaaS vendors) can be cost effective for organizations wanting regular testing.

Ultimately, the decision depends on scale and context. Choosing a security partner hinges on risk appetite, regulatory exposure, and operational maturity. A highly regulated bank may invest in quarterly enterprise grade audits, while a lean startup might opt for an on demand penetration test from a specialized boutique. Evaluate your organization’s risk profile, compliance needs, and budget to select the right provider.

FAQs: Penetration Testing Services

• How much do penetration testing services cost?

Pricing varies widely by scope, and most Irish providers quote per engagement rather than publishing price lists. Cost depends on the number of applications, APIs and IP ranges in scope, environment complexity, the depth of manual testing, reporting and retesting requirements, and whether you buy a one off test or a recurring PTaaS subscription. Highly regulated industries like finance and healthcare may incur more due to extra evidence and reporting work. Ask several providers to price the same defined scope so you can compare like for like.

• Are certifications more important than tools?

Both matter, but the operator is paramount. Certified professionals OSCP, CREST, CISSP, etc. ensure sound methodology, while tools scanners, exploit frameworks only augment their work. A security team with top certifications will interpret results and adapt techniques for your environment. In practice, a balanced approach is best: look for evidence of both strong credentials and modern tooling.

• How long does a pentest take?

It depends on scope. Duration depends on the number of applications, roles, IP ranges and environments in scope and on reporting requirements; ask each provider for a scope-specific schedule. Complex or multi site projects with compliance reporting take longer. Rapid tests targeting a small system can be done in days, but thorough assessments require time for setup, exploitation, and thorough reporting. Some providers also offer continuous or rolling tests as part of a subscription.

• What reports should I expect?

A professional pen test report typically includes an executive summary, scope and methodology, and detailed findings with severity ratings and remediation advice. Look for clear descriptions of each vulnerability, risk impact, and concrete fix recommendations. For example, CommSec’s clients highlight receiving detailed and actionable reports. You should expect risk prioritized findings, references to industry frameworks OWASP, CVSS, and possibly a post test consultation to walk through results.

• How often should testing be done?

At minimum, once per year is common often required by standards. However, more frequent testing is prudent after major changes like new software releases, mergers, or significant config changes or in high threat industries. Continuous pentesting services monthly/quarterly checks are emerging as best practice for active development teams. Ultimately, revisit testing whenever critical systems change or new compliance rules emerge.

In today’s increasingly hostile cyber environment, choosing the right penetration testing partner is vital. The companies highlighted here were selected against the criteria described earlier. No single provider is perfect for every situation: large consultancies excel at scale and process, while specialized firms deliver technical depth and flexibility. We encourage you to use this comparison as a starting point: verify certifications, scrutinize sample reports, and consider pilot projects.

Remember, effective security is not one size fits all. Assess your organization’s size, industry, and risk profile carefully. Engage providers that align with your culture and priorities, whether that’s rigorous compliance driven testing or cutting edge red teaming. By making an informed choice, you’ll not only meet regulations GDPR, DORA, etc. but build real confidence in your defenses. Penetration testing is more than a checkbox it’s about proactively uncovering weaknesses so you stay a step ahead of attackers.

Ready to Strengthen Your Defenses? The threats of 2026 demand more than just awareness; they require readiness. If you're looking to validate your security posture, identify hidden risks, or build a resilient defense strategy, DeepStrike is here to help. Our team of practitioners provides clear, actionable guidance to protect your business. Explore our Penetration Testing Services to see how we can uncover vulnerabilities before attackers do. Specific options include web application, cloud, mobile application, and continuous penetration testing. Drop us a line, we’re always ready to dive in.

About the Author: Mohammed Khalil is a Cybersecurity Architect at DeepStrike, specializing in advanced penetration testing and offensive security operations. With certifications including CISSP, OSCP, and OSWE, he has led numerous red team engagements, focusing on cloud security, application vulnerabilities, and adversary emulation. His work involves dissecting complex attack chains and developing resilient defense strategies for clients in the finance, healthcare, and technology sectors.