The most basic definition of any security system is found in its name. It is literally a means or method by which something is
secured through a system of interworking components and devices.
Security is the degree of resistance to, or protection from, harm. It applies to any vulnerable or valuable asset, such as a person,
dwelling, community, item, nation, or organization.
One of the most important and widespread aspects of security is national security. National security is a concept that a government,
along with its parliaments, should protect the state and its citizens against all kind of "national" crises through a variety of power
projections, such as political power, diplomacy, economic power, military might, and so on.