Cyber Security is the most diversified domain in today's era. It covers almost all dimensions in this technological age. This book aims to provide the platform for young students to know about the concept and systematic flow of Cyber Security concept. It envisages Technical Know How about various components, carriers and characters of Cyber Security System. This book has been designed keeping in mind about the need & development of young minds towards the newly discovering threats and attacks. \n\nThe major issue is that one can only identify the threats and attacks which have already been encountered but no one can even guess about those unlawful acts which can occur in near future. Every day new types of criminal acts or unlawful activities have been discovering. One cannot provide protection against unseen circumstances. So, through the medium of this book we try to build a strong background about the facts and events which lead to situations resulting in generation of new crimes or illegal activities. This book is highly recommended for Undergraduate, Post Graduate students and equally for non CS/IT background also.