The complexity of the contemporary world has dictated the commercial security to supplement the supply of security in states. This is for the varied security needs of the citizens to be fulfilled. Hence this study embarked to illustrate the various roles of commercialized security in the national security of selected countries: the USA,

The commercial security industry's effective establishment and regulation have been overlooked in many states, including Kenya. The increase of Commercial security firms' involvement in national and transnational business resulted in the United Nations drafting the Convention on the Regulation, Oversight, and Monitoring of Private Military and Security Companies. This study examines the Commercial Security Industry in Kenya in terms of establishment and regulation, outlining the industry's major issues and challenges. The aim was to demonstrate that laws and practices relating to registration and regulation of the Commercial Security Industry in Kenya are loosely created, weak, and shaky. And up to date, the commercial security industry in Kenya is operating in contravention of the Constitution.