აბსტრაქტი. Big data's explosive growth in ICT (information and communication technology) environments has created previously unheard-of national security risks, mostly because of privacy flaws that bad actors could take advantage of. This study looks at the serious risks to national security that comes from insufficient data security protocols in extensive big data ecosystems. We examine how the vast amount, velocity, and diversity of information create weaknesses in ICT foundations, enabling cyber-secret operations, enabling fear-based oppression aid, and upsetting fundamental national structures. The study highlights the need for robust security measures, real-time monitoring, and updated administrative features tailored to Pakistan's ICT environment. Developing a security-conscious culture in massive information administration, enhancing cross-sector collaboration, and integrating privacy-preserving advancements are some of the main recommendations.