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25 years of experience in IT security
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Worked in various roles such as security engineer, security architect, penetration tester and information security officer
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Specialised in Information Security Governance and Cyber Risk and Resilience
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Holds various certifications (CISSP, CISM)
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Lecturer at ISACA and Antwerp Management School
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Researcher in digital security at University of Antwerp
What does Dennis do?
Dennis Verslegers currently manages two specialized teams focused on information security at major public sector institutions: the European Commission and the Flemish Tax Department. Additionally, he serves as a subject matter expert and strategic advisor at Orange Cyberdefense, where he assists clients in making informed decisions about information security and implementing secure software development practices, as well as adopting DevSecOps methodologies. Dennis also contributes to the academic advancement of the field through his research on digital security governance and cyber resilience at the University of Antwerp.
Dennis at Data Protection Institute
As an educator, Dennis is deeply committed to translating his field experience into accessible and impactful learning. Known for his clarity and enthusiasm, he brings complex security concepts to life for a wide range of learners, from technical professionals to business leaders. His teaching approach is pragmatic, interactive, and tailored to real-world challenges, drawing on his advisory work and ongoing PhD research in cybersecurity and resilience at the University of Antwerp. Dennis contributes to programs such as the AMS Cyber Security Architecture and Technologies and the ISACA Certified Information Security Manager tracks. His communication skills and passion for the field of security make him a sought-after speaker, trainer, and mentor in both academic and professional contexts.
This is what Dennis says about himself:
“Perfect security is a myth; near-perfect security is unaffordable. What remains is the need for deliberate, accountable decisions.”
Dennis as trainer
As a trainer, Dennis focuses on providing clear conceptual guidance that directly connects to real-world applications. He helps students understand not just what security best practices are, but why they exist, unpacking the assumptions and intentions behind them. His teaching translates these practices into actionable insights, equipping professionals to make informed decisions in complex environments. Above all, he encourages an iterative approach to security, emphazising that progress and practicality often matter more than perfection.
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