Speakers

Stefan J. Nieborak is a board‑level Chief Information Security Officer and global cybersecurity leader with more than two decades of experience advancing enterprise resilience, AI/ML risk governance, and digital transformation. He serves as CISO for Telefónica, Founder of d‑RiskCyber, and a member of the Bain Advisor Network, advising Fortune‑level organizations on cyber strategy, ransomware readiness, and risk governance. At Telefónica, Stefan leads global cybersecurity operations and has driven major transformations, including the modernization of the Cyber Defense Center into a Cyber Fusion Center, expansion of SOC automation, and enterprise Zero Trust and cloud security programs. He also piloted the company’s post‑quantum encryption strategy and embedded secure SDLC practices into AI/ML systems. Previously, Stefan held senior roles at Morgan Stanley and across global financial institutions, building insider‑threat programs, cloud security policies, and resilience frameworks. He holds a PhD in Philosophy (summa cum laude) and brings a strategic, ethical, and business‑aligned approach to cybersecurity leadership. As Founder of d-RiskCyber, Stefan built a consultancy recognized for AI-driven Security GRC, resilience maturity assessments, and advanced ransomware defence frameworks. Previously, Stefan held senior cybersecurity leadership roles at Morgan Stanley, where he directed enterprise cyber risk initiatives, launched the Security Data Acquisition & Control function, and led the Insider Threat Mitigation and Data Loss Prevention programs. His early career in capital markets technology at RBC, J.P. Morgan, and Zurich-Scudder adds deep experience in trading systems, cloud migration, and regulatory compliance. Stefan is widely recognized for translating board priorities into measurable outcomes through executive dashboards, resilience frameworks, ransomware playbooks, post-quantum encryption strategies, and AI/ML risk governance models. His philosophical training uniquely strengthens how cyber risk is framed ethically, strategically, and conceptually enabling