Find a Pentest Company in Luxembourg
There are 29 penetration testing companies in Luxembourg. 72% are small firms (50 or fewer employees) and 28% are larger organizations.
IMRIM
IMRIM is a Luxembourg-based IT services and consulting company specializing in information security; it offers penetration testing, security audits, training, and architecture design, with 6 employees and 10% annual growth.
Eurofins
Eurofins is a private biotechnology research company with 7,686 employees, $7.4B annual revenue, and EUR 8.8B market cap; headquartered in Luxembourg, Luxembourg. It operates a global network of over 1,000 independent companies and 900 laboratories across 62 countries, offering extensive testing services including food, environment, pharma, and CRO. Recently acquired SYNLAB España and provides penetration testing services via Eurofins Digital Testing, specializing in remote, local, web, API, and mobile assessments.
G.I.P. S.à r.l.
Luxembourg-based IT services and consulting company specializing in cybersecurity, compliance, and security operations; offers penetration testing and security monitoring services with 18 employees and a focus on SIEM, vulnerability management, and managed security services.
ITCS Luxembourg
Business consulting and services company specializing in cloud modernization, DevSecOps, and security assessments including penetration testing; founded in 2023, with 3 employees (+50% YoY growth), headquartered in Luxembourg, Luxembourg, serving private and public clients with over 10 years of experience.
Sub7 Security
Cybersecurity company specializing in penetration testing services; offers testing for Dapp/Webapp/API, simulating real-world cyber-attacks, and delivering detailed security recommendations. Founded in 2022, with 7 employees, headquartered in Luxembourg, and active in cybersecurity, blockchain, and web3 sectors.
Luxgap
Luxgap is a Luxembourg-based private business consulting and services company specializing in data protection, GDPR compliance, cybersecurity, and penetration testing. Founded in 2018, it has 7 employees with a +50% YoY growth, and offers double assurance services to enhance data security and reduce costs. The company maintains a web presence with 3,825 monthly visits and ranks #5,246,701 globally.
itrust consulting s. à r. l.
Cybersecurity company specializing in penetration testing, security audits, and risk analysis; founded in 2007, with 6 employees and +14.3% YoY growth; based in Niederanven, Luxembourg. Established a pentester team in 2011, recognized for trustworthy security services across Luxembourg and Europe; operates in information security, ISO audits, critical infrastructure protection, and security policy.
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Cresco Cybersecurity
Cybersecurity company specializing in penetration testing and security assessments; 13 employees with 26.7% YoY growth; based in Luxembourg; founded in 2020; offers services including red team, blue team, phishing, and security transformation plans, with an ethical hacking background.
Rsecure sàrl
Cybersecurity company specializing in penetration testing, security audits, and risk assessments; founded in 2021 with 9 employees, based in Capellen, Luxembourg; offers services including pentest, cybersecurity audits, governance, and incident response, with active social media presence.
Cubic Consulting SARL
IT services and cybersecurity consultancy specializing in penetration testing services, including EXPRESS and standard pentests; founded in 2021, 2 employees (+22.2% YoY growth), headquartered in Leudelange, Luxembourg; also operates a cybersecurity publication, Cubic Lighthouse, focused on security news and insights.
Conostix S.A.
Cybersecurity company specializing in penetration testing services, including security infrastructure reviews with internal and external pentest assessments; based in Windhof, Luxembourg, with 2 employees and 16.7% YoY growth.
Linosec
Cybersecurity firm headquartered in Luxembourg; provides threat-led penetration testing and comprehensive security assessments, including DORA TLPT services; emphasizes active security testing and infrastructure protection.
Excellium Services
Luxembourg-based cybersecurity company specializing in penetration testing and offensive security; headquartered in Contern, Luxembourg (5 Rue Goell, L-5326); provides penetration testing, red teaming, and cybersecurity consultancy services.
Bourbon Offensive Security Services
Cybersecurity company based in Luxembourg; specializes in penetration testing, attack vector analysis, and impact validation with a pragmatic, offensive security approach. Founded in 2025, operates with 1 employee, focusing on real-world security solutions.
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PwC Luxembourg
Luxembourg-based professional services firm providing assurance, tax, and advisory services; offers penetration testing and cybersecurity assessments, with headquarters confirmed at 2, rue Gerhard Mercator L-2182 Luxembourg.
Cyber Solutions Luxembourg
Luxembourg-based cybersecurity company specializing in risk-based cybersecurity, penetration testing, and Red Team simulations; located at 34B Rue Philippe II, Luxembourg; known for real-world attack simulations and EU regulation compliance.
EBRC - European Business Reliance Centre
Luxembourg-based IT services and consulting company specializing in ICT solutions, data centers, cloud, and cybersecurity; 38 employees, $57.2M revenue, with expertise in penetration testing, attack simulations, and Red Team exercises, forming part of the DEEP group to lead responsible digital services.
Lux-ICTS
Lux-ICTS is a private technology, information, and internet company based in Luxembourg, specializing in digital outdoor advertising and IT consultancy; it offers Penetration Testing as a Service (PTaaS) and has a team of 1 employee with -33.3% YoY growth. Founded in 2020, it focuses on innovative IT solutions and cybersecurity services, with a modest web presence and global ranking.
CipherQuest
Cybersecurity consulting firm based in Luxembourg; provides penetration testing and offensive security services, with a focus on risk management and cybersecurity risk reduction.
Hacknowledge
Cybersecurity company based in Luxembourg; provides 24/7 security monitoring, threat detection, incident response, and penetration testing services including external, internal, and remote access testing; located at 9 Rue du Laboratoire, Luxembourg.
N-Lux
N-Lux is a Luxembourg-based IT Services and IT Consulting firm specializing in high-value IT consulting such as DevSecOps, container orchestration, Cloud Computing, and IT Security; founded in 2021 with 1 employee. The company explicitly provides penetration testing (pentest) services, supported by its categorization and homepage references.
IMRIM
Cybersecurity firm based in Luxembourg; specializes in information security advisory and penetration testing services across web, app, network, and infrastructure; headquartered at 17, rue Edmond Reuter, Bâtiment Bouvreuil, L-5326 Contern, Luxembourg; actively recruits penetration testers.
Quantum Security
Cybersecurity company specializing in offensive security services; offers penetration testing, red teaming, vulnerability assessments, and source code review; founded in 2022 with 1 employee; based in Flaxweiler, Luxembourg.
CGI
Global IT and business consulting firm headquartered in Luxembourg; offers IT services, digital transformation, and cybersecurity including penetration testing, red team exercises, phishing simulations, and infrastructure assessments.
Proximus NXT Luxembourg
IT Services and IT Consulting company specializing in telecom, cloud, data solutions, and cybersecurity; 147 employees with 11.7% YoY growth; $3.2M revenue; founded 1978; based in Bertrange, Luxembourg; provides penetration testing, security audits, and vulnerability assessments.
ObsidianCorps
Luxembourg-based technology and cybersecurity firm specializing in comprehensive security solutions, including penetration testing and offensive/defensive security services; operates from Differdange with a focus on resilient system building for modern enterprises.
BDO Luxembourg
Accounting firm based in Luxembourg with 457 employees and 11.6% YoY growth; provides financial and compliance services globally; offers threat-led penetration testing (TLPT) services for cybersecurity assessments, supporting their focus on digital resilience and cybersecurity advisory.
Hacknowledge Sa
Luxembourg-based cybersecurity company specializing in penetration testing; part of Swiss Post Cybersecurity, offering simulated targeted attack services and security assessments; rebranded from Hacknowledge Lux SA, with confirmed Luxembourg office at 9 Rue du Laboratoire, 1911 Luxembourg.
PwC
PwC is a private professional services firm with 120,836 employees and $55.4B annual revenue; based in Luxembourg at 2, rue Gerhard Mercator, L-2182 Luxembourg. It provides assurance, tax, advisory, and cybersecurity services, including penetration testing such as red teaming, web app, infrastructure, mobile, OT/ICS, and IoT testing, emphasizing active attack simulation capabilities.