National security is a dynamic matter of every nation, involving protection, freedom and the good quality of life of each individual. This article discusses three components of the national security, namely energy security, cyber security and social or cultural security. Legal aspects like e-courts and e-justice are also included in the article. Supercapacitors are an emerging energy storage device which have applications ranging from the on-chip energy storage, power supply during missiles launching to hybrid energy storage systems. Cyber governance and security in the integrated world through intelligent portals and systems is essential and directly coupled to the hardware including energy storage devices. Optical chips or infrastructure are a disruptive technology and will revolutionize the future of digitization. Brain, mind and related complex organ diseases can be treated with better and faster analysis due to the improvements in high-performance computing and cognitive science. Social and cultural security is a complex topic in a diverse democracy like India. Caste-based census, religious assets-based unity and policy formulation have been discussed in the present article. The present article surveys and gives insights related to the above aspects of the national security requiring urgent technological intervention for next generations.