The aim of the article is to study personnel security as a subsystem of economic security of enterprises, its role in ensuring organizational and management activities of an enterprise in view of the current situation, structural specifics, and personnel fraud, as its significant subjective threat. The article defines the dominance of the personnel security subsystem in relation to other subsystems of an enterprise’s economic security as a fundamental principle in any of its activities. The structural components of personnel security of an enterprise, which are the cause of the existence of a large number of threats, are identified. Objective and subjective threats to its provision are highlighted. The topicality of corporate fraud as a significant subjective global threat to personnel security of an enterprise is substantiated. Two main approaches to defining the concept of corporate fraud are highlighted: the legal (Ukrainian) approach and the broad (world) one. The main trends of the most common types of economic crimes and their impact on Ukrainian organizations are analyzed. The key factors and their influence on committing an economic crime and / or fraud by an employee (fraudster) in Ukraine in 2018 are identified. There proved the necessity of influencing each of the factors that cause economic crimes by encouraging a culture of openness at all levels of the organization, introducing effective control mechanisms and developing a positive corporate culture. According to the 2018 Report to the Nations “Global study on occupational fraud and abuse”, the types and number of cases of corporate fraud in the world are determined, and their structural analysis carried out
