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Balancing Privacy and National Security: A Critical Study of Data Protection Laws in the Digital Era

Aug 2026 · Zenodo (CERN European Organization for Nuclear Research)

Abstract

The rapid expansion of digital technologies has transformed the collection, processing, and sharing of personal data, creating unprecedented opportunities for innovation while raising serious concerns regarding privacy, cybersecurity, and government surveillance. As cyber threats, terrorism, and cross-border data flows continue to increase, governments have strengthened surveillance mechanisms to protect national security. However, these measures often create tensions with the fundamental right to privacy, making it essential to establish an appropriate legal balance between individual freedoms and collective security. This review paper critically examines the evolving relationship between privacy and national security through an analysis of contemporary data protection laws and international legal frameworks. Adopting a doctrinal and qualitative review methodology, the study analyses secondary sources, including legislation, judicial decisions, policy documents, and scholarly literature. The paper comparatively evaluates major legal frameworks, including the European Union's General Data Protection Regulation (GDPR), India's Digital Personal Data Protection Act, 2023, the United States' sector-specific privacy model, and the United Kingdom's data protection regime. The review highlights the strengths and limitations of these legal systems in addressing surveillance, government access to personal data, and individual privacy rights. It further identifies emerging challenges arising from artificial intelligence, biometric surveillance, cross-border data transfers, and digital governance. The study concludes that neither privacy nor national security should be treated as absolute rights; instead, both must be harmonized through transparent legislation, proportional restrictions, judicial oversight, and institutional accountability. A balanced, rights-based legal framework supported by international cooperation and adaptive regulatory mechanisms is essential for protecting individual liberties while enabling governments to respond effectively to evolving security threats in the digital era.

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