What type of security is focused solely on services provided by an organization’s own employees?

The focus of proprietary security is specifically on services delivered by an organization’s own employees. This type of security is characterized by the fact that the personnel employed for security duties are directly hired and managed by the organization itself, rather than being sourced from external providers. This approach allows the organization to maintain greater control over security operations, ensuring that personnel are aligned with the organization's policies, culture, and objectives.

Proprietary security typically includes functions like access control, surveillance, and emergency response, all managed internally. The benefits include enhanced loyalty, familiarity with the organization's specific needs, and the ability to train employees in accordance with the organization's protocols and standards.

Other types of security mentioned in the options, such as public security, private security, and contracted security, involve different operational frameworks. Public security generally refers to services provided by government entities, private security encompasses services offered by independent firms, and contracted security indicates that security personnel are hired from an external source, leading to a lack of direct organizational control. Each of these distinctions clarifies why proprietary security is the correct answer, focusing on employee-driven efforts.