Information and communication technologies (ICTs) have become an integral part of modern societies, and their misuse, termed ICT threats, poses a escalating risks to international security and stability. These threats, whether arising from state or non-state actors, can undermine societal progress, economic growth, and human safety. Cyber-attacks targeting critical systems such as energy grids or financial institutions highlight the insufficiencies of current international laws in addressing these challenges. This paper examines legal instruments and policy frameworks that aim to address ICT threats, including those of the European Union (EU), the Organization of American States (OAS), the Organization for Security and Cooperation in Europe (OSCE), and the Association of Southeast Asian Nations (ASEAN). However, the enforcement of such regional regulations, policies, and recommendations is yet to be adequately enforced. From a domestic perspective, this paper has explored examples of legal instruments and policy frameworks from various countries, such as the UK, Germany, France, Finland, and Singapore. These examples demonstrate how different countries address ICT threats in their way and how they regulate cyber activities to ensure the security and stability of their respective digital domains. This paper underscores the pressing need for robust legal instruments and policy frameworks that can effectively address ICT threats and safeguard state sovereignty in cyberspace. The review of regional and domestic legal instruments and policy frameworks provides a starting point for identifying the most effective strategies to counteract ICT threats and ensure digital security and stability for all.