National defense strategies in the digital era: Cybersecurity and cyber warfare

Abstract

Digital transformation has substantially reshaped national defense by incorporating cyberspace as a strategic domain alongside the traditional land, maritime, air, and space domains. In this context, cybersecurity and cyber warfare have gained increasing relevance due to their impact on the protection of sovereignty, critical infrastructure, and state stability. The objective of this article was to analyze national defense strategies in the digital era, with emphasis on cybersecurity and cyber warfare as essential components of contemporary security. Methodologically, the study was conducted using a qualitative, descriptive–analytical approach through a documentary review of scientific literature, strategic documents, and regulatory frameworks related to defense and digital security. The results reveal that states face increasingly complex cyber threats characterized by asymmetry, anonymity, and the ability to generate significant effects without the use of conventional force. Furthermore, the findings indicate that strengthening national defense in cyberspace requires the integration of technological capabilities, regulatory frameworks, international cooperation, and specialized training. It is concluded that the incorporation of cybersecurity and cyber warfare into national defense strategies is essential to address the security challenges of the twenty-first century and to strengthen state resilience against emerging threats.