Digital Defense Diaries

Cybersecurity has never been just about technology. It has always been about leadership, judgment, resilience, and the people responsible for protecting increasingly complex digital systems that power our modern world.

In this book, award-winning Chief Information Security Officer and internationally recognized cybersecurity leader Jelena Zelenovic Matone shares over two decades of experience navigating cyber risk inside financial institutions, critical infrastructure environments, international organizations, regulatory ecosystems, and global cybersecurity communities. Far more than a traditional technical handbook, this book combines practical cybersecurity guidance with deeply personal lessons learned throughout a career spent at the intersection of technology, governance, artificial intelligence (AI), quantum computing, operational resilience, supply chain security, digital sovereignty, and leadership under pressure.

Through real-world stories, strategic frameworks, future predictions, and candid reflections from the frontlines of cybersecurity leadership, readers gain a rare inside perspective on how modern organizations must prepare for an increasingly uncertain digital future. At the same time, the book serves as a powerful call for greater diversity and inclusion within technology, encouraging the next generation of professionals - particularly women - to challenge assumptions, break barriers, and help shape the future of cybersecurity itself. This is not simply a book about cybersecurity. It is a book about how technology, leadership, resilience, and human judgment will define the future of digital trust.

What You Will Learn:

• Understand the core principles that build strong cybersecurity foundations across modern organizations
• Build practical cybersecurity governance frameworks that improve operational resilience and reduce digital risk
• Identify emerging risks introduced by artificial intelligence (AI), cloud computing, supply chain dependency, and autonomous systems
• Navigate global cybersecurity regulations, including DORA, NIS2, GDPR, TIBER-EU, and modern compliance frameworks
• Prepare organizations for post-quantum cryptography and the future transition toward quantum-safe security
• Assess third-party technology risks and strengthen contractual cybersecurity protections across vendor ecosystems
• Develop leadership skills required to communicate cybersecurity risk effectively at executive and board levels
• Build stronger cyber resilience strategies focused on recovery, operational continuity, and crisis management
• Understand how modern geopolitics, digital sovereignty, and technology dependency are reshaping cybersecurity strategy globally
• Know how diversity, inclusion, and multidisciplinary thinking directly strengthen cybersecurity leadership and innovation

Who This Book Is For:

Cybersecurity professionals, CISOs, technology leaders, risk managers, IT professionals, cloud architects, compliance and governance professionals, board members, legal teams managing digital risk, students entering cybersecurity, and professionals seeking to understand how emerging technologies such as artificial intelligence (AI) and quantum computing are reshaping the future of digital security, as well as individuals looking to build cybersecurity careers and leaders responsible for protecting increasingly complex digital ecosystems in highly regulated environments