Find a Pentest Company in Ireland
There are 41 penetration testing companies in Ireland. 80% are small firms (50 or fewer employees) and 20% are larger organizations.
SecureSpace.ie
Irish IT services and cybersecurity broker specializing in penetration testing, red teaming, and managed detection; 4 employees with 100% YoY growth, founded in 2022, based in Dublin, Ireland, with over 100 projects completed securing 50,000+ endpoints.
100% Security Labs
IT services and consulting company specializing in cybersecurity and compliance; provides penetration testing, web and mobile app testing, cybersecurity consulting, and risk management; 2 employees, founded 2017, Dublin, Ireland.
Vertical Structure (Acquired by Instil)
Cybersecurity company specializing in security and penetration testing; founded in 2006, based in Belfast, Ireland, with 3 employees. Offers human-based penetration testing, security consulting, and training, including CREST & CHECK, ISO27001, and Cyber Essentials. Focuses on a human-centric approach to cybersecurity with a small team and niche market presence.
Pentestco
Pentestco is a private Irish technology firm founded in 2016, with 2 employees, specializing in online penetration testing and website security assessments. It provides black box penetration testing, vulnerability scanning, and detailed security reports to help businesses mitigate website security risks.
FORUS-P Cyber Security
Cybersecurity company specializing in penetration testing, vulnerability scans, and security audits for web applications; founded in 1991, based in Ireland, with 8 employees. Known for serving webshop owners, developers, and e-commerce trustmarks like Thuiswinkel.org.
agoa-ltd
Cybersecurity consultancy specializing in penetration testing services; based in Swords, Ireland, founded in 2017, publicly listed, with a focus on network and computer security.
247 CyberLabs
Cybersecurity and compliance consulting firm based in Dublin, Ireland; specializes in penetration testing, PCI DSS, ISO 27001, and vulnerability management; 2 employees with 100% monthly growth and 33.3% YoY decline; founded 2014; website: https://www.247cyberlabs.com.
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Edgescan
Cybersecurity company specializing in penetration testing, vulnerability management, and attack surface management; 72 employees, $10M revenue, founded 2011 in Dublin, Ireland; $13.6M funding; offers a unified platform for continuous security testing and PTaaS, with active market presence and recent security research publications.
Cycubix LTD
Cybersecurity company specializing in penetration testing and security consultancy; provides technical penetration testing services, vulnerability assessments, and security training in Ireland and online; founded 2011, headquartered in Ireland, with 2 employees. Focuses on business application security and offers a range of information security services.
CommSec Cyber Security
Irish cybersecurity company providing penetration testing, security assessments, and SOC as a service; 15 employees, founded 2013, headquartered in Blanchardstown, Dublin, Ireland; focuses on resilience, compliance, and risk reduction for organizations.
WhatsExposed
IT Services and IT Consulting company specializing in cybersecurity; offers penetration testing, vulnerability assessments, and remediation workflows; founded 2022, 13 employees, Ireland-based, +137.5% YoY growth.
Threatscape
Threatscape is a private cybersecurity firm specializing in penetration testing and IT security services; with 29 employees, founded in 2010, headquartered in Dublin, Ireland, and serving enterprise clients globally. The company explicitly markets external and internal penetration testing, web app security assessments, and cloud penetration testing, confirming its focus on cybersecurity.
VMGroup
IT Services and IT Consulting company based in Ireland; specializes in cybersecurity, digital forensics, electronic discovery, and IT audits; offers penetration testing services; 10 employees with 17.6% YoY growth; founded in 2014; uses advanced forensic technology.
Cyber Security Ireland (CSI) - for OT/ICS
Private cybersecurity firm specializing in OT/ICS security; offers penetration testing and risk analysis services; founded 2022; based in Dublin, Ireland; 3 employees with +300% YoY growth.
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Secora Consulting Ltd
Cybersecurity company specializing in penetration testing and risk mitigation; CREST-accredited with 7 employees, founded in 2018, headquartered in Stranorlar, Ireland; offers comprehensive pentest services including web, API, network, mobile, cloud, and IoT assessments, with a global rank of #10,030,139 and 983 monthly website visits.
Penteor
Cybersecurity consulting firm specializing in penetration testing, red teaming, and adversary simulations; 11 employees; Founded 2005; Dublin, Ireland; Serves banking, energy, healthcare, government, retail, and education sectors.
Cyrex
Cyrex is a private IT services and cybersecurity company based in Dublin, Ireland, founded in 2015. It employs 17 staff (+11.8% YoY growth) and specializes in security solutions including penetration testing, application security, web3 security, smart contract audits, network audits, and load testing, leveraging proprietary technology. Recognized as a global leader in cybersecurity and game development support, it serves clients worldwide with a focus on security and development services; 17 employees, private, founded 2015, Dublin HQ.
PsyberX
IT services and consulting firm specializing in cybersecurity; provides web application, API, infrastructure penetration testing, and social engineering testing; 3 employees; founded 2024; Dublin, Ireland.
Eolas Technologies
IT services and consulting company based in Dublin, Ireland; specializes in managed IT, cybersecurity, network infrastructure, cloud services, and penetration testing; 3 employees, $146.8K revenue, founded 2010, with a focus on security and IT management.
Tenendo
Tenendo is a private Irish-based IT & Services company specializing in penetration testing services, including application and infrastructure pentests; with 4 employees, founded in 2020, and a focus on security testing and threat intelligence.
BH Consulting
Irish-based IT services and cybersecurity consulting firm; specializes in penetration testing, risk management, GDPR, and incident response with 19 employees and $1M-$5M revenue. Founded in 2004, it provides market-leading security services and is recognized for its expertise in real-world attack simulations and data protection.
SECUREISM
Cybersecurity company specializing in security assessment, penetration testing, and system hardening; 41 employees with 54.3% YoY growth; founded 2018; based in Dublin, Ireland; expertise includes vulnerability assessments, security audits, and compliance with ISO/IEC standards.
Smarttech247
Cybersecurity company specializing in managed detection and response, penetration testing, and threat management; headquartered in Cork, Ireland, with 110 employees, founded in 2003, and $1.7M in funding; offers VisionX MDR platform and serves healthcare, fintech, government sectors.
Cyber Security (NI) Ltd
Cyber Security (NI) Ltd is a Belfast-based private cybersecurity firm founded in 2017, with 2 employees. It specializes in managed detection and response (MDR), SIEM management, penetration testing, vulnerability assessments, and advanced security services, providing 24/7 threat monitoring, real-time detection, and rapid incident response. The company is committed to protecting data, organizations, and reputation within Ireland.
zSecurity
Cybersecurity company specializing in ethical hacking, penetration testing, and security training; offers manual pentesting services via dedicated webpage; based in Dublin, Ireland with 11 employees, founded in 2017, and focuses on educating about black-hat hacking methods and system security.
Integrity360
Integrity360 is a private Irish-based cybersecurity and IT consulting company with 237 employees, $146.8M revenue, founded in 2005. It is Ireland's largest cybersecurity specialist and offers comprehensive penetration testing services, including infrastructure, web app, API, mobile, Wi-Fi, IoT, cloud, AD, and segmentation testing, along with PTaaS. The firm operates across Europe, Africa, and the Caribbean, and has recently acquired Redshift Cyber Security and Holiseum. It ranks #779,785 globally and #165,814 in its country, with a focus on helping organizations grow securely.
Rits Information Security
Irish IT services and consulting firm specializing in information security and penetration testing; 4 employees, founded 1990, headquartered in Dublin, Ireland; emphasizes vendor independence and technical excellence in security consulting.
Sentrix
IT services and consulting company based in Dublin, Ireland, with 9 employees; specializes in cybersecurity including penetration testing and Red Team Attack Simulation as part of its security assessments; experienced 366.7% monthly workforce growth.
Responsered
Embedded software products company founded in 2025; based in Dublin, Ireland; offers penetration testing (pentest) services; 2 employees with +100% monthly growth.
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Pure Networks
Irish-based IT services and consulting company specializing in cybersecurity; offers autonomous penetration testing via Horizon3.ai’s NodeZero platform, with 5 employees and +33.3% YoY growth • 11-50 employees; IT Services/Cybersecurity; Founded in Dublin, Ireland; Website: https://www.purenetworks.ie
Enterprise Defence - (Award Winning Cyber Security Specialists)
Cybersecurity company specializing in penetration testing, vulnerability management, and SOC services; 12 employees with 87.5% YoY growth, founded 2015, headquartered in Sligo, Ireland. Recognized for award-winning cybersecurity solutions and active in the global market with 1,723 monthly website visits.
GuardYoo
GuardYoo is a cybersecurity firm specializing in automated data collection and analysis for cybercrime investigations; it provides penetration testing services as confirmed by press releases and partnerships, and is based in Cork, Ireland. Founded in 2018, it employs 2 people.
IT Security People
IT Security People is a private Irish-based computer and network security firm with 4 employees, specializing in IT security audits, risk management, digital forensics, and penetration testing. They are ISO 27001 certified and serve the Irish market, focusing on cybersecurity threat mitigation and compliance.
Techsearch
Irish IT services and consulting company specializing in quality assurance, software testing, and security testing including penetration testing; 3 employees, founded 2015, headquartered in Ireland, with rapid 50% monthly growth and a broad service portfolio.
Ergo
IT services and consulting company based in Dublin, Ireland; 420 employees, $214.4M revenue; offers IT solutions, managed services, cloud, security, and penetration testing; founded 1993; recognized as a leading provider in Ireland.
Savenet
Irish-based IT managed services provider specializing in cloud, security, and compliance solutions; explicitly offers penetration testing services as part of their cybersecurity offerings; headquartered in Dublin, Ireland.
HCS
IT services and consulting company based in Dublin, Ireland; 56 employees; founded 1994; specializes in security, support, and transformation; Fortinet Expert partner, Microsoft Gold, Dell partnerships; ISO27001 certified; provides penetration testing services including external IP pen testing.
Ers It Solutions
Cybersecurity company headquartered in Dublin, Ireland; offers penetration testing (pentest) services as part of managed cybersecurity solutions; Irish domain (ers.ie) and operational presence in Ireland.
Typetec
Irish cybersecurity firm based in Dublin; specializes in penetration testing and attack simulation services to identify vulnerabilities and test defenses; over 40 years of experience in delivering resilient IT, cloud, and security strategies.
Conscia Ireland
Cybersecurity company specializing in offensive security services including penetration testing and red teaming; Irish-registered entity Conscia Limited based in Dublin 8, with explicit pentest offerings in Ireland.
It Governance Europe Ltd
Irish cybersecurity company specializing in penetration testing and IT governance; offers CREST-accredited pentest services and emphasizes risk management and compliance for organizations in Ireland and Europe.