In the present era driven by technology, we are seeing how it is possible to wage warfare without spilling a drop of blood. Hackers and digital attackers can inflict tremendous harm on countries and large corporations, with the potential to cripple their vital functions. How has such Cyber Warfare evolved from the 20th century to today? What do we need to know about how this feature of the 21st century can affect our daily lives? This book has been written by an IT expert to increase awareness about such contemporary topics.