The present enquiry is an Indo-centric approach to study the extension of Copenhagen School related to Securitisation of the Cyber domain and Cyber Security in the prevailing International Relations Theory affecting the systemic behaviour of nation-states as Cyber Space will make traditional international borders redundant. One deliberation exercise has stated that “Cyber security has long transcended the discipline of information technology – expanding to law, international relations and the social sciences. The work being a policy-relevant documents will also hopefully serve as a basic text for students and researchers at even postgraduate levels to bridge the gap between the realm of ideas and the domain of public policymaking in the area of Cyber Studies. Contents Foreword Preface and Acknowledgement Acronyms Introduction Part I: Overview on Policy as a Term of Reference Part II: Defining Cyberspace Part III: Cyber Politics Part IV: Securitization Theory, Copenhagen School & Contextualising Cyber Security Within the IR Theory Part V: Roadmap to India’s Cyber Security Policy Conclusion Endnotes Appendices A White Paper of The Committee of Experts on A Data Protection Framework for India B National Cyber Power Index 2020 C National Cyber Security Policy, 2013 Index