Today, national security throughout the world is expanding and deepening the scope and types of transnational threats such as terrorism, cybercrime, weapons of mass destruction, and drug offenses. In recent years, transnational national security threats have been dominated by non-state actors, such as individuals or various interest groups within a country, multinational corporations, international organizations, and terrorists. As these non-state actors transcended borders, their importance and role in the international society increased. In the past, information activities were mainly conducted at the national level, but the task of collecting and analyzing information about non-state actors was added. On the other hand, potential terrorism threats that threaten national security is different from traditional security threats in response. Traditional security threats, such as war and military threats, could be resolved to some extent by a realistic approach that focuses on alliances, balance of power, and collective security measures across countries. However, transnational security issues such as terrorism are largely out of the realistic framework of consciousness, and information security cooperation among nations can be relatively smooth because of the low possibility of a security dilemma in the case of such a transnational security threat. Transnational crimes that threaten national security are far more difficult tasks than traditional warfare with traditional sovereign states. It is not easy to capture the target of the terrorist organization easily, it carries out the war in the form of defensive rather than the attack by nature, and even if the current leader of the terrorist organization is arrested or dies, the successor appears constantly and it is very difficult to reach the final crush. In addition, the bottom of the issue of terrorism is based on the assumption of religion and conviction that most terrorist organizations are convinced of their final victory and never accept defeat, so that the war on terror is much more difficult and persistent than the war between countries. In addition, terrorism is a deadly threat to national security because terrorist organizations do not limit their targets even in case of attacks against innocent civilians. The emergence of such transnational threats further demands a close link between the national intelligence community and the law enforcement community. Thus, national intelligence also demands a statutory understanding comparable to that of law enforcement, which is the incarnation of the rule of law. Therefore, only when it is accompanied by a lawful understanding and understanding of national intelligence, it will provide permanent and constant value to national intelligence activities. It can be said that it is a way to systematically develop democracy, openness and national intelligence, but it should be done within the scope that the purpose of counterterrorism based on rule of law is not undermined.
2. Backgrounds of National Security Crime
3. Types of NSC
4. Essential Difference between Crime and General Criminal Offense for National Security