CySec
Cybersecurity company based in Prague, Czechia; specializes in penetration testing, active data leak monitoring with DLAP, and social engineering assessments; provides comprehensive security evaluations and vulnerability identification.
SnapStack
IT services and consulting firm based in Czechia; specializes in custom software, managed IT, and cybersecurity including penetration testing; 22 employees, founded 2009, headquartered in Prague; offers security & penetration testing services as a core part of their cybersecurity solutions.
Yoursec
Czech cybersecurity firm based in Prague; specializes in penetration testing, web application security, and IT system assessments; offers services in Czech and English; supports clients with cyber protection and security solutions.
Eviden Czech Republic
Czechia-based IT company registered at Doudlebska 1699/5, Prague; provides cybersecurity services including penetration testing (pentest) as listed on its homepage.
SYS NET SHIELD
Cybersecurity firm based in Prague, Czechia, specializing in penetration testing and security assessments; provides active pentest services with a dedicated team including Patrik Žák, a penetration tester.
Redamp.io
Redamp.io is a Czech private cybersecurity company specializing in computer and network security, with 13 employees and a -11.1% YoY growth since 2012. It is recognized as a boutique penetration testing provider in the Czech Republic for 2025, offering data security solutions, mobile data security, and security services for group and corporate retreats.
TandemSec
Czech cybersecurity firm based in Brno; specializes in ethical hacking and penetration testing services; registered in Czechia with IČO 23020270; focuses on verifying system resistance against malicious attacks, with experience in banking, telco, and energy sectors.
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Techfides
Cybersecurity firm headquartered in Brno, Czechia; provides penetration testing and security audit services, including web application security assessments and comprehensive pentest solutions.
Wardensec
Cybersecurity company based in Prague, Czechia, specializing in penetration testing services; provides security assessments to identify vulnerabilities, with a focus on proactive defense.
Hacking Lab
Cybersecurity company based in Czechia; specializes in penetration testing, Red Teaming, and social engineering assessments; headquartered in Prague, Czech Republic with registered office at ARICOMA, Voctářova 2500/20a, 180 00 Praha 8 Libeň.
Noibit
Czech cybersecurity firm based in Prague; provides penetration testing and red teaming services, with headquarters in Prague, Czechia, and registered addresses in Prague. The company specializes in offensive security solutions and serves clients across industries.
Denevy
Cybersecurity firm headquartered in Prague, Czechia, specializing in penetration testing services; explicitly references penetration testing in its workflow and reporting processes.
Datasys S.r.o.
Czech IT company based in Prague; provides cybersecurity services including penetration testing (pentest) with nearly 30 years of experience serving government and corporate clients; specializes in security assessments and testing practices.
Devglobe s.r.o.
IT services and consulting firm based in Czechia; 7 employees with 14.3% YoY growth since 2013; specializes in web design, digital security, ICT consulting, custom applications, and penetration testing services including external, internal, mobile, web, IoT/OT, phishing, and team engagements; maintains a small web footprint with 119 monthly visits.
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ACTUM Digital
IT services and consulting company based in Czechia; 215 employees, $5M-$25M revenue, founded 1996; offers digital transformation, experience management, and cybersecurity including penetration testing; recently acquired Kuehlhaus; recognized partner with over 28 years in business.
ShadowSec
Cybersecurity firm based in Rožnov pod Radhoštěm, Czechia, specializing in IT security and penetration testing services; actively promotes cyber protection with a local focus and a presence on multiple social media platforms.
Zymestic Solutions
Czech cybersecurity company specializing in data protection, network security, and application security; offers penetration testing (pentest) services including ethical hacking to assess system vulnerabilities; based in Prague 4, Czechia with registered address at Opatov Park Líbalova 2348/1, Chodov.
Trustica
Czech cybersecurity company based in Prague; specializes in penetration testing and applied cryptography with over 20 years of experience; provides security assessments, cryptography services, and system architecture solutions.
Bezpečnost.it
Czech cybersecurity firm Bezpečnost.it s.r.o. based in Prague; provides penetration testing and red teaming services; headquarters at Pavlíkova 606/14, 142 00 Praha; specializes in simulated attack scenarios to identify vulnerabilities.
Ixperta
Czech-based technology company headquartered in Prague; specializes in IT strategy, cybersecurity, and digital transformation; offers penetration testing, attack simulations, and resilience testing; focuses on building advanced IT ecosystems and solving complex tech challenges.
YOKEE
YOKEE is a Czech-based IT services and consulting company specializing in cybersecurity, penetration testing, red teaming, and security analysis; founded in 2023 with 0 employees and experiencing a 100% decline in growth YoY. The firm provides tools, training, and support for business advisory and cybersecurity, emphasizing credibility and trust issues in the industry.
Direct It.cz
Czech cybersecurity company based in Prague; provides penetration testing and red teaming services to simulate multi-vector attacks for organizational resilience; headquarters in Prague, Czechia, with registered address at Mánesova 1723/70, 12000 Praha, IČO 05669260.
Etnetera Group
Etnetera Group is a Czech IT services and consulting company specializing in custom software, data analytics, and digital transformation; with 18 employees (+4.8% YoY growth), founded in 2011, headquartered in Prague. The firm offers penetration testing services as part of its security solutions, demonstrating capabilities in cybersecurity testing and vulnerability assessment.
COMGUARD a.s.
Czechia-based private company in computer and network security; 27 employees since 2006; focuses on security products, expert services, and training in Central and Eastern Europe; provides penetration testing including ethical hacking and social engineering.
ALEF CZ 💻
IT Services and IT Consulting company based in Czechia; 115 employees, $34.7M revenue, founded in 1994, with expertise in cybersecurity including penetration testing services; 37.9% YoY growth, serving clients with comprehensive technology solutions.
Target Five
Czech cybersecurity firm specializing in exposure management, vulnerability assessment, and penetration testing; headquartered in Prague with VAT CZ19840250; offers automated scans and manual pentests powered by ImmuniWeb.
Extelligence
IT services and consulting company based in Prague, Czechia, founded in 2011; employs 10 staff with $1M-$5M revenue; specializes in cybersecurity, data management, and IT resourcing; offers penetration testing services with autonomous platform integration (NodeZero via Horizon3.ai); stable employer rating of 5.0/5.0 from 3 reviews.
PwC Česká republika
PwC Česká republika is a Czech-based professional services firm headquartered in Prague, with offices in Brno and Ostrava; it offers audit, tax, consulting, and cybersecurity services, including penetration testing, threat scans, and security assessments, serving clients across various industries.
Axians Czech Republic
Czechia-based IT solutions provider specializing in comprehensive ICT services, including cybersecurity and penetration testing; offers tailored IT infrastructure design, implementation, and management with a focus on human-centric solutions; explicitly lists penetration testing as a core service and has conducted engagements for clients like the Ministry of Justice CZ.
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ICT nwt s.r.o.
IT services and consulting company based in Czechia; 5 employees with 22.2% YoY growth; offers cloud solutions, IT outsourcing, IT security, and penetration testing services; operates own data center.
GORDIC
IT services and consulting company based in Czechia; 117 employees (+17% YoY), $20.3M revenue; specializes in security, cloud, digitalization, and offers penetration testing services; founded 1993; ranked #18,121 domestically and #1,850,438 globally; active in cybersecurity, with recent product attestations and media activity.
Mycom Solutions, S.r.o.
Czech IT security company providing cybersecurity services including penetration testing, risk analysis, data backup, and employee training; over 14 years of experience; headquartered in Czechia; offers 24/7 support and proactive threat mitigation.
Baldur Security
Cybersecurity company specializing in offensive security and penetration testing; offers network and web application testing with a focus on white-box assessments; based in Copenhagen, Denmark with 2 employees, experiencing a 50% YoY decline.
Dubex - Part of Conscia
Cybersecurity firm based in Glostrup, Denmark, founded in 1997; specializes in risk management, cyber defense, and penetration testing services, with 46 employees and $12M annual revenue; experienced a -26.3% YoY growth, with a focus on comprehensive security solutions and market leadership in Denmark.
Banshie
Cybersecurity company specializing in penetration testing, red teaming, and ethical hacking; 12 employees with a 30% YoY workforce decline; founded in 2015 and headquartered in Copenhagen, Denmark; offers defense, blockchain, and managed security services to enhance organizational security posture.
Defensive Group
IT security consultancy based in Solrød Strand, Denmark; specializes in penetration testing, red teaming, and security solutions with 16 employees and a focus on resilience and risk assessment.
Conscient Systems
Conscient Systems is a Denmark-based cybersecurity company specializing in information security, strategy consulting, and operations support; providing penetration testing services as part of their cybersecurity offerings. Founded in 2015, they have 3 employees with +25% YoY growth, focusing on securing IT infrastructure and helping clients optimize technology investments.
Cyber Partners
Cyber Partners is a cybersecurity firm based in Dragør, Denmark, specializing in critical infrastructure security; it offers penetration testing, vCISO, SIEM, and NIS2 consulting, with 8 employees and 50% YoY growth since its founding in 2022.
EAGLE SHARK CYBER DEFENCE
Cybersecurity and investigations company specializing in physical and digital penetration testing, incident response, and cyber risk assessment; 5 employees, founded 2017, headquartered in Copenhagen, Denmark; part of Eagle Shark Group with a comprehensive security approach.
Danish Cyber Defence
Danish Cyber Defence is a Denmark-based cybersecurity and IT consulting company specializing in penetration testing, red team, blue team, incident response, and cybersecurity education; with 7 employees, founded in 2017, headquartered in Copenhagen, Denmark, and actively engaged in cybersecurity operations and consulting.
SecPoint
Cybersecurity company specializing in network and computer security solutions; provides penetration testing services with dedicated pages on their website; based in Denmark with 6 employees, $17M annual revenue, founded in 1998; offers proprietary products like penetrator and UTM; last funding round was Non Equity Assistance in October 2019; web presence includes 10,892 monthly visits and a global rank of 1,880,707.
Truesec
Cybersecurity company specializing in penetration testing, offensive security, and IT infrastructure security; 261 employees, $6.6M revenue, founded 2005, headquartered in Denmark with offices in Copenhagen and Aarhus; active in vulnerability assessments, security workshops, and penetration testing services, with a global rank of #466,152.
cyber detector
IT services and consulting company specializing in cybersecurity solutions; founded 2024, based in Ringsted, Denmark, with 2 employees. Provides an all-in-one cybersecurity platform featuring penetration testing, security awareness, risk management, and NIS2 compliance, emphasizing enterprise-level security for organizations of all sizes.
CETA Cyber Defence
Cybersecurity company specializing in IT security consulting, risk management, and penetration testing; 12 employees with 7.1% monthly growth, founded in 2019, based in Denmark, offering services including security testing, solution design, and security management.
SagaLabs
Cybersecurity education and penetration testing provider based in Copenhagen, Denmark; offers realistic scenario training, Cyber Range platform, and 'assume breach' pentests; 7 employees with 140% YoY growth; $137.7K in funding; active in cybersecurity training, incident response, and cyber defense.
NorSec
NorSec is a Denmark-based computer and network security firm founded in 2010; it specializes in IT security consulting for small businesses and private clients, with key services including Penetration Testing, GDPR, Security Management, Forensics, Vulnerability Management, SCADA/ICS Security, Threat Intelligence, SIEM, Incident Response, and Intrusion Detection.
ADO Security
Cybersecurity company specializing in awareness, defensive, and offensive security services; 14 employees; founded 2025; headquartered in Copenhagen, Denmark; offers penetration testing, vulnerability scanning, and cybersecurity awareness training.
Cyber Consultia
Cyber Consultia is a Denmark-based IT Services and IT Consulting company specializing in cybersecurity, penetration testing, and security strategy; 2 employees with 50% YoY growth, founded in 2023, headquartered in Herlev, Denmark. They focus on tailored security solutions, business continuity, incident response, and cybersecurity training.
ReTest Security
ReTest Security is a Danish cybersecurity company specializing in IT security testing, including penetration testing, vulnerability scanning, and security analysis; 17 employees, founded in 2019, headquartered in Herlev, Denmark. The firm emphasizes stress-free security testing services and maintains a web presence with 5,605 monthly visits and a global rank of #3,227,654.
e-ducators
Denmark-based IT services and consulting company specializing in cybersecurity, GRC, and penetration testing; offers OT security assessments, phishing training, and cyber awareness programs; 4 employees, founded 2015, with 25% YoY growth, active in cybersecurity testing and training, headquartered in Ballerup, Denmark.
CSIS Security Group A/S
CSIS Security Group A/S is a Denmark-based private cybersecurity firm specializing in computer and network security, with 61 employees and founded in 2003. It offers penetration testing, managed detection & response, incident response, and security consulting, serving clients across sectors with a fully operational 24/7 security capability. Recognized as Europe's leading pure-play cybersecurity and intelligence services provider, it maintains a global web presence and active engagement in cybersecurity news.
CyberNordic
CyberNordic is a Denmark-based IT services and consulting firm specializing in cybersecurity, including penetration testing services; founded in 2020, with 6 employees and 75% YoY growth. The company focuses on security assessments and operates in a highly digitized environment.
Wingmen Security
Cybersecurity company specializing in penetration testing, ethical hacking, and security consulting; provides managed services, data analysis, and tailored security solutions to private and public clients in Denmark and abroad. Founded in 2021, employs 32 staff, headquartered in Aalborg, Denmark; explicitly offers penetration testing services involving automated and manual techniques, with comprehensive reporting and mitigation recommendations.
Prueba Cybersecurity
Prueba Cybersecurity is a private cybersecurity company specializing in managing cyber risks through offensive security services such as penetration testing, security assessments, phishing, and red teaming; 15 employees; headquartered in Esbjerg, Denmark; offers external, internal, and web application penetration testing services.
UNITAS
IT Services and IT Consulting firm specializing in information security, IT security, GRC/compliance, and IT auditing; offers penetration testing via pentest-as-a-service, vulnerability scanning, and exploitability assessments; 13 employees, founded 2019, headquartered in Aarhus, Denmark.
itm8 Danmark
IT services and consulting company based in Denmark; 622 employees; offers penetration testing services including external, internal, and Web API pentests, focusing on security evaluation from an attacker’s perspective and vulnerability reporting.
Seculyze
Cybersecurity company based in Denmark; provides penetration testing and ethical hacking services, including web application vulnerability assessments; officially registered with CVR 42004332 at Lathyrusvej 11, 3500 Vaerloese, Denmark.
Sipato
IT services and consulting company specializing in security testing, risk analysis, and infrastructure design; based in Denmark with 3 employees, founded in 2016. Known for penetration testing services and a focus on client satisfaction.
Cloudpros
Cybersecurity and IT hosting company based in Herlev, Denmark; provides penetration testing, data security, and hosting services with 2 employees, founded in 2017, owning servers in three Tier 4 facilities in Denmark.
TDC Erhverv
TDC Erhverv is a Danish IT services and consulting firm specializing in communication technology, digital collaboration, and cybersecurity; with 494 employees (+37.4% YoY growth), headquartered in Copenhagen, Denmark, and offering penetration testing services via a dedicated online form.
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Wingmen Solutions
Denmark-based IT solutions provider specializing in network, data center, and security services; offers penetration testing through Wingmen Security, with a focus on tailored, secure digital infrastructure solutions. Headquarters in Soborg, Denmark.
Kopenhagen Konsulting
Danish cybersecurity and digital risk consultancy based in Copenhagen; offers penetration testing and security assessment services, emphasizing expertise in navigating unknown cybersecurity risks.
Conscia
Cybersecurity company based in Denmark; provides penetration testing services as part of its security solutions, with confirmed headquarters in Copenhagen and Brøndby, Denmark.
Pentests.dk
Danish cybersecurity company specializing in web application penetration testing; provides comprehensive pentest services with a focus on identifying hidden risks. Registered in Greve, Denmark (CVR 19856879), with a Danish phone number (+45) and a Danish-language website.
Haze Networks ApS
IT & Services company specializing in network, infrastructure, security, and penetration testing; 6 employees, founded 2019, based in Copenhagen, Denmark; offers network design, wireless surveys, security, pentests, and asset tracking; emphasizes real-world penetration testing and customer relationships.
Siscon
Danish cybersecurity firm headquartered in Gladsaxe, Denmark, specializing in GRC consulting, security testing including penetration tests, and security management solutions; recognized for advisory services and the ControlManager platform.
TPO Group
IT Services and IT Consulting company specializing in cybersecurity and high-stakes cyber operations; offers penetration testing services as part of their cybersecurity solutions, with explicit expertise listed for Chrissa Constantine; based in Gentofte, Denmark, with 5 employees.
Dkcert
Dkcert is a Denmark-based cybersecurity organization specializing in vulnerability scanning and security incident management; located in Kongens Lyngby with CVR 30 06 09 46, it offers services such as weekly vulnerability scans of research networks, demonstrating its penetration testing capabilities.
Trustworks
Danish cybersecurity firm based in Copenhagen; specializes in penetration testing and red team exercises, providing cybersecurity consulting and simulated attack services.
Delviq IT Solutions
Denmark-based IT services provider with 30+ years of experience; offers penetration testing and security architecture services; headquartered in Aarhus, Denmark, CVR 43308432.
NetNordic
Cybersecurity firm based in Denmark; provides penetration testing services including external/internal, OT/IoT, application, and physical testing; Danish subsidiary registered in Søborg (CVR 33636431).
Zencurity
Security company based in Denmark; provides penetration testing, network security, and internet resource management services; registered as Zencurity ApS with CVR: 3294 1184, specializing in security and internet projects.
Heyhack
Private software development company based in Copenhagen, Denmark, specializing in automated web application penetration testing; founded in 2022, with $1.6M in funding and acquired by F5 in 2024; provides continuous security testing services to help software teams identify vulnerabilities before hackers do.
Rapid7
Cybersecurity company with a Danish subsidiary (CVR 38855441, Copenhagen); offers comprehensive penetration testing services including network, web, IoT, social engineering, red team, and wireless testing, focusing on simulated attack scenarios to identify vulnerabilities.
Section ApS
Danish cybersecurity firm specializing in penetration testing services; offers simulated phishing attacks and social engineering assessments to evaluate organizational vulnerabilities; registered in Copenhagen with CVR 40069356.
PwC
Global professional services firm with 120,836 employees and $55.4B annual revenue; based in Hellerup, Denmark; provides assurance, tax, advisory, and cybersecurity services including penetration testing to identify vulnerabilities and simulate attacks.
itm8 Denmark
Cybersecurity service provider based in Denmark; offers penetration testing, vulnerability assessments, and red-team style security testing; headquartered in Denmark with a majority of staff and operations in Denmark.
It Experterne
Danish IT security company with 15 years of experience; provides penetration testing and vulnerability scanning services; 2 employees; HQ in Denmark; emphasizes cybersecurity and IT resilience.
Fendous Sustainable Solutions
Denmark-based IT and cybersecurity firm specializing in sustainable IT solutions, web development, AI chatbots, and cybersecurity services including penetration testing; headquartered in Aalborg, Denmark, with CVR 43257196.
BullWall
BullWall is a Denmark-based cybersecurity firm specializing in ransomware containment, mitigation, and penetration testing services; with 31 employees, $1M revenue, founded in 2016, and a focus on advanced ransomware protection, red teaming, and cybersecurity solutions.
KPMG
KPMG is a global professional services firm providing accounting, advisory, and consulting services with 47,522 employees and $36B revenue; based in Denmark with offices in Copenhagen and Hellerup, and a member of CREST with penetration testing capabilities.
Leave A Mark Consulting Group ApS
Cybersecurity and compliance consulting firm headquartered in Copenhagen, Denmark; specializes in ISO27001, NIS2, DORA, GDPR, and cybersecurity services; offers penetration testing and vulnerability testing as core services.
Sec1 DK
Cybersecurity company based in Farum, Denmark; provides penetration testing, security audits, and email security solutions; specializes in advanced penetration tests with comprehensive reports; founded in Denmark, serving clients across various sectors.
Holm Security
Danish cybersecurity firm specializing in vulnerability management and automated penetration testing; operates as a subsidiary of Holm Security Sweden AB with offices in Herlev and Stockholm; provides pentest services integrated into its platform, supporting MSSP partnerships and real-world attack simulations.
CGI
IT Services and IT Consulting company with 59,616 employees, $10.8B revenue, and a $36.1B market cap; operates in Denmark through CGI Danmark A/S with multiple offices in Aarhus and Aalborg, and offers penetration testing services validated by NCSC and CREST.
PwC Denmark
Danish-based professional services firm headquartered in Hellerup, Denmark; offers consulting, audit, and advisory services including penetration testing and ethical hacking; registered in the Danish CVR with office at Strandvejen 44, 2900 Hellerup.
Netcompany
Danish IT consultancy headquartered in Copenhagen, Denmark, founded in 1999; provides digital transformation and cybersecurity services, including penetration testing (pentest) services as part of security evaluations; located at Strandgade 3, DK-1401 København K.
Peventio
Denmark-based cybersecurity company offering IT security solutions and penetration testing services; provides vulnerability scanning, endpoint detection, and response; registered in Denmark (CVR 41431431); headquartered in Copenhagen, Dahlerupsgade 1.
Mainbrain A/S
Denmark-based cybersecurity company specializing in penetration testing and vulnerability assessments; offers free vulnerability scans with attack surface mapping and ongoing monitoring; headquartered in Copenhagen with CVR 25186893 and main office at Center Boulevard 9, DK-2300 København S.
NNIT
NNIT is a Denmark-based IT services and consulting firm specializing in digital transformation, cybersecurity, and data solutions; with 1,288 employees, $270.9M annual revenue, and SEK2.6B market cap. They explicitly provide penetration testing and vulnerability assessment services to enhance security and compliance.
DANITCO ApS
Danish IT consulting firm specializing in cybersecurity, IT support, and management; offers penetration testing and Red-team security services; headquartered in Vordingborg, Denmark with CVR 45515869.
Verinet Server Hosting Center for Colocation and IT Outsourcing
Denmark-based private security company specializing in government relations and security solutions; offers penetration testing, ransomware, crypting, decryption, and malware services to 2,500 dealers; 2 employees; active in ethical hacking and vulnerability assessments.
It Forum Gruppen A/s
IT Forum Gruppen A/S is a Denmark-based IT company providing IT outsourcing, hosting, cloud solutions, and cybersecurity services, including penetration testing and security assessments; headquartered in Risskov, Denmark, with CVR 27765238, and recognized for its local presence and technical security expertise.
It X Partner
Denmark-based IT support and security services provider; offers IT security assessments and vulnerability reports, aligning with penetration testing services; headquartered in Brøndbyvester, Denmark, with a strong local market presence.
Crator
Danish cybersecurity firm based in Køge; specializes in penetration testing and security assessments; offers vulnerability analysis and remediation services to improve IT security.
Icsrange
ICSRange is a Denmark-based cybersecurity firm specializing in operational technology (OT) security, offering penetration testing and vulnerability assessments for industrial and embedded devices; headquartered in Copenhagen, Denmark, with a focus on simulating real-world attacks to improve security posture.
Itplan A/s
Denmark-based IT company with offices in Varde, København, and Aarhus; provides penetration testing services to identify security vulnerabilities and strengthen IT security.
Lund&bendsen A/s
Lund&bendsen A/s is a Denmark-based IT consulting and services firm headquartered in Copenhagen; it provides digital transformation expertise and specializes in penetration testing (pentest) services, including vulnerability testing and ethical hacking, supported by a dedicated methodology page.
Outpost24
Cybersecurity company based in Denmark; offers penetration testing, PTaaS, attack surface management, and application security solutions; operates with offices in Copenhagen, Denmark, and headquarters in Sweden; provides comprehensive attack simulation and risk management services.
Convergint
Global service-based systems integrator with Danish subsidiary Convergint Denmark ApS (CVR DK43510649) based in Copenhagen; provides security and technology integration services, including penetration testing (red team and pentest) as evidenced by a 2022 contract.