Our cybersecurity trainers are seasoned professionals with extensive backgrounds in cybersecurity, risk management, information security and data-protection. They bring hands-on experience from both public and private sectors, ensuring that every course is grounded in real-world relevance.
Our trainers hold globally-recognised certifications reflecting their deep technical knowledge and experience with best practices in security. Whether you are new to security or advancing your expertise, they are here to guide your learning journey with clarity, confidence, and credibility. Below, you can learn more about a small selection of our cybersecurity trainers.
Rob van der Staaij
Rob is the founder of Stysec B.V. and a seasoned expert in cybersecurity, identity and access management, risk management, and privacy.
As an affiliate of the University of Groningen, he contributes regularly to academic and professional discourse through publications on cybercrime.
Rob’s training sessions are known for their clarity and structure, making complex topics accessible to learners at all levels. He places strong emphasis on the critical role of cybersecurity in today’s digital world, and fosters an interactive learning environment where discussion and engagement are key. His courses are designed to be participatory, with high expectations for student involvement and curiosity.
Oscar Koeroo
Oscar serves as the Group CISO at the Ministry of Health, Welfare and Sport, where he is responsible for the development of the information security strategy. With a strong foundation in both technical and strategic domains, he bridges the gap between policy and practice.
Previously, he held roles at KPN and Nikhef, where he focused on cryptography and cybersecurity. His expertise spans PKI, certificate authorities, and incident management.
Oscar's training sessions are known for their depth and practicality. A leading authority in the field of information security, he possesses a talent to explain complex topics with clarity.
Manon de Vries
Manon is a researcher in applied cryptography at TNO, and has extensive experience as a pentester, security engineer, and privacy officer.
She delivers training courses on encryption and PKI, bridging the gap between theory and practical implementation. In her sessions, she emphasises the importance of context and the real-world applicability of cryptography.
Known for her integrity and focus on practical solutions, her lessons are accessible while being structured around realistic, real-world examples. Her approach combines technical knowledge and expertises with insights into organisational dynamics.
Jochen den Ouden
Jochen is a Certified Ethical Hacker who specialises in privacy, ethical hacking, and secure programming. He blends hands-on experience with a passion for teaching, always highlighting the human side of IT security.
His training courses focus on building awareness and encouraging participants to think like a hacker. Jochen believes that effective information security depends on people, technology, and organisational context.
Known for his clear and sociable style, he delivers engaging sessions in ethical hacking, secure coding, and broader information security.
Erik Veldhuis
Erik is a crisis management expert at the IND and draws on past experience gained in his time at PwC.
He focuses on the pragmatic design of crisis management and business continuity processes. His training courses blend sound theoretical principles with practical, actionable advice.
Erik creates a safe and collaborative learning environment where participants learn from one another and build confidence in their ability to respond to crises. With an integrated, practice-oriented approach, Erik helps organisations prepare for and manage disruptions effectively.
He encourages participants to apply their learning and drive meaningful change within their own organisations.
Edo-Jan Koster
Edo-Jan has over 25 years of experience in IT and currently works as a Lead Auditor at DEKRA, where he specialises in information security, quality, IT service management, and continuity management.
His training approach focuses on combining standards with organisational dynamics, where he links theory to practice with recognisable, relatable examples.
Edo-Jan brings a wealth of experiences to the courses he leads, having worked in both large and small organisations, and in the public and private sectors. Like several of our cybersecurity trainers, his training courses are interactive and practice-oriented, where he encourages knowledge-sharing between and discussion amongst course delegates.
Bas van den Berg
Bas started his career as a developer, and later progressed to becoming a security consultant focusing on secure development and security assessment.
In his role and training courses, he combines technical knowledge and insight into human behavior to ensure his sessions are not just interactive but also focused on practical applicability.
Bas also emphasises the importance of security in a data-driven world, with his ultimate goal to make participants both aware of and skilled in digital security.
Like so many of our trainers, he aims to a learning environment for delegates in which knowledge-sharing forms a central part of the experience.
Mariëtte Neumann
Mariëtte is the Managing Director of KCS Marketing, where she is an expert in public relations and crisis communication.
In her role, she translates strategy into concrete plans and shares her knowledge in training courses.
Her lessons combine theory with practical examples and exercises, and she places a strong emphasis on strengthening communication skills in crisis situations.
Mariëtte emphasises the importance of careful information transfer, and her training courses are known for being varied and practice-oriented.
Serge Buitenhuis
Serge is a consultant in the public and private security sector with more than 10 years of experience in security strategy.
In his career, he has trained over 150 professionals in security risk management, and his hallmarked by his training courses that are energetic, interactive, and practical.
Serge translates theory into realistic situations and change processes, by combining strategic insight with practical experience.
His goal is to increase effectiveness in practice and encourages knowledge sharing and creates a safe learning environment.