Abstract Whenever discussions are held with global technology leaders about India’s flagship programmes—Digital India and Smart Cities—the conversation eventually shifts from the vast scale and execution capacity to the critical issue of cyber security. Today, security breaches have become almost routine. While these initiatives aim to generate new social and economic avenues, they also expand the digital ecosystem, creating more entry points for cybercriminals. The success of a fully connected economy depends heavily on the safety and reliability of the devices and systems that make up this network. Therefore, this study focuses on understanding the rising necessity of cyber security in an increasingly digital era. The research is based on secondary sources such as books, journals, reports, and online material relevant to the topic.