Team

Our rangers

We are a professional team of ethical hackers who will help you stand out in the cyber world. Each member of our team has been carefully chosen and screened. We are constantly learning and our knowledge is not only proven by certifications from recognized authorities.

Ethical hackers

Jan Marek

Co-founder | Red Teamer | DFIR

Co-founder of the Cyber Rangers. Specializes in Red Teaming, Windows OS, Active Directory, Hyper-V, Microsoft Sentinel, PowerShell and DFIR.

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Daniel Hejda

Co-Founder | Ethical Hacker

Co-founder of the Cyber Rangers. Specializes in OSINT, social engineering and attack initiation vectors. He also works on Azure Security, investigations and research in the dark Net.

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Jan Plaček

Penetration tester

Specializes in penetration testing of web and desktop applications. As part of his research, he uncovers vulnerabilities in others to help run a safer internet.

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Radek Wilczyňski

Security engineer | Developer

Specializes in the development of secure applications, infrastructure security and data protection. He is interested in cybersecurity and always strives to stay one step ahead.

Security+ | CCNA

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Roman Kummel

Penetration tester

Roman is a penetration tester with a special focus on technologies within the LAMP stack. His activities include researching Internet vulnerabilities and he is also the author of the well-known book Cross-Site Scripting in Practice.

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Michal Hanus

Cyber Defense Consultant

Michal is a blue teamer, risk manager, architect and manager of IT services with more than 20 years of experience. His career also includes technical training, IT and Info Sec strategy creation, strategic project management and critical infrastructure security.

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Marek Štelčík

Security Consultant

Marek specializes in security concepts and service architectures on the Microsoft platform, including the implementation of Microsoft Sentinel technologies in companies. His work also includes evaluating AI system architectures and automating the operations of security surveillance teams.

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Pavel Prochorov

Investigator and Researcher

Pavel specializes in finding information about companies and people with an emphasis on precision and detail, which allows him to identify weaknesses and create realistic scenarios of cyber threats.

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