Cybersecurity Companies

Introduction Greece is increasingly becoming a force to be reckoned with as a European cybersecurity power base, supported by growing top talent and foreign investment. With more cyberattacks taking place worldwide, Greek firms are rising to the challenge, providing world-class penetration testing, threat intelligence, managed security, and regulatory compliance solutions. In this extensive list, we identify the Top 20 Cybersecurity Companies in Greece for 2025, starting with Qualysec, the company breaking standard records in penetration testing and cybersecurity assurance.  List of Top Cybersecurity Companies in Greece 1. Qualysec Headquarters: Global HQ India-based Founded: 2020 Specialized in: Penetration Testing, VAPT, Web & Mobile App Security, API Security Test Qualysec ranks at number one on our list because it is the strongest and fastest-growing cybersecurity firm with a Greek-based headquarters for the year 2025. It started in India but has expanded aggressively across Europe with a strategic Athenian operation to cover the EU region. Their fintech, SaaS, e-commerce, and healthcare industry clients have a tremendous amount of trust in their cybersecurity offerings. Qualysec stands out in the way that they implement a hybrid methodology — a combination of human touch and AI-based tools to provide actionable reports that customers adore. Their main services are: With 97% customer retention and ISO/IEC 27001:2022 certification, Qualysec’s Greek market leadership is changing the way companies protect their digital assets. Talk to our Cybersecurity Expert to discuss your specific needs and how we can help your business. Schedule a Call 2. NVISO Greece Head Office: Brussels, Belgium (offices in Athens & Thessaloniki) Established: 2013 Specialized in: Threat Detection, Red Teaming, SOC Services NVISO ranks second on our list due to its leading cybersecurity expert and intelligent investments in Greek cyber experts. The company has a headquarters in Belgium, but its operational base is in Athens, with its operations to be soon based in Thessaloniki. NVISO offers high-impact services that are relied upon by top banks, telecom leaders, and public sector clients. Their participation has been included in the Greek Cybersecurity Challenge and collaboration with universities to make sure they are investing in local skill-building. Their  The main solutions are: Managed SOC services with 24/7 monitoring Advanced threat detection and incident response Red Team and Purple Team simulations Security architecture and compliance consulting With its pool of certified professionals and EU compliance expertise, NVISO continues to be the market leader in Greece’s cybersecurity sector.  3. Hack The Box Headquarters: London, UK (with R&D conducted in Athens) Founded: 2017 Specializing in: Cybersecurity Learning, Ethical Hacking Training Platforms Hack The Box is in the third position, transforming cybersecurity training with gamified, live-hacking labs. Greek entrepreneurs started the business with a significant development footprint in Athens and are providing services to more than 1 million users globally. Their platform is used extensively by Fortune 500 firms and security professionals for ongoing learning and proving their skills.  Some of their key features include: Lifelike team and individual hacking drills Corporate labs for employee upskilling Global certifications (e.g., HTB CPTS) are accepted worldwide Community-based content and capture-the-flag challenges Hack The Box is not only a training site but a worldwide phenomenon fueling the cybersecurity profession, with Greek talent at its core. 4. Obrela Security Industries Headquarters: Athens Founded: 2009 Specialization: Cyber Risk Management-as-a-Service (CRaaS) Obrela is the fourth prescriptive cyber security vendor. Headquartered in Athens, the company provides a better and smarter CRaaS solution that is relied upon by clients from high-risk sectors like energy, finance, and telecom. On an ongoing basis, they provide 24/7 risk management via their proprietary platform that includes real-time analytics, threat intelligence, and automation.  Core services are: Managed Detection and Response (MDR) Cyber Risk-as-a-Service 24/7 Breach simulation and threat modeling AI-powered incident prediction and orchestration Through substantial venture capital funding and European-wide partnerships, Obrela is assisting companies in Greece and globally to stay cyber resilient amidst a constantly changing threat environment. 5. ForAllSecure Headquarters: United States (Greek co-founder: Thanassis Avgerinos) Founded: 2014 Specialization: Autonomous Application Security Testing ForAllSecure stands in the fifth position, utilizing autonomous fuzz testing to discover software vulnerabilities before they become threats. With Greek brilliance coursing through its veins, the organization collaborates hand-in-glove with defense establishments and academia. Mayhem is the company’s lead product that provides real-time security to DevSecOps teams and vulnerability discovery automation within software ecosystems.  Solutions include: Autonomous fuzzing of CI/CD pipelines Unification of static and dynamic analysis Support for multi-language and containerized apps Compliance reporting for secure SDLCs ForAllSecure’s Greek engineering teams and R&D activities keep pushing application security to a worldwide level. 6. Future Headquarters: Zurich, Switzerland (Co-founder: Nikos Karapanos, Greece) Established: 2016 Specialization: Authentication & Zero Trust Security Sixth is Futurae with its second-generation authentication platform, easily able to protect digital identities. The Zurich company, co-founded by Greek entrepreneur Nikos Karapanos, offers frictionless access through passwordless and multi-factor authentication. Futurae solutions are designed for fintechs, insurers, and hospitals that need secure, scalable, and user-friendly security architectures.  Core offerings: One-tap MFA and biometric sign-in Zero Trust integration with business apps Mobile and web SDKs for onboarding securely Risk-based adaptive authentication The company’s SDKs and API-based solutions are picking up pace among Greek businesses who desire to scale frictionless security. 7. Cylera HQ: New York, USA (Greek co-founder: Paul Bakoyiannis) Year of establishment: 2017 Specialization: Healthcare Cybersecurity & IoT Defense Cylera, ranked seventh, is an expert in protecting healthcare networks and hospitals from emerging cyber-attacks. It was founded by Paul Bakoyiannis, and the company is a top organization in the security of European medical IoT devices. Additional scrutiny by EU healthcare watchdogs and regulators is complemented by Cylera’s Greek footprint in the following: Device threat detection and monitoring, and device behavior Risk scoring and network segmentation GDPR, NIS2, and HIPAA compliance AI-powered anomaly detection and alerting As healthcare is digitizing at a pace that continues to accelerate, Cylera’s solution provides patient information and life-saving devices with the protection they need. 8. Malloc HQ: Nicosia & Athens Established: 2020 Area of expertise: Mobile Privacy & Anti-Surveillance Tools Malloc is an eighth-ranked