The protection of the public and their property is a significant global concern. Security issues are an inherent aspect of human habitation, and the safety of individuals and their belongings has consistently been of paramount importance across cultures, regardless of their level of development. This holds true whether the culture in question is relatively simple or complex. In South Sudan, numerous private security firms are operating; however, attacks and looting of NGO facilities in Juba City have continued unabated. The rationale of this research is to assess the factors that disrupt the performance of private security companies in providing security services to NGOs in Juba City. The objective of the study was to establish the influence of private security firms' infrastructure on their performance concerning NGOs The research was supported through the two theories namely resources-based theory and expectancy theory. The target population was 500 employees and sample size included 222 respondents, and the study employed a descriptive research design. The research was guided using interviews and questionnaires for data collect ion or gathering. Respondents were selected using systematic random sampling and simple random sampling techniques. Data analysis was conducted using SPSS version 23 statistical software, with results presented in tabular form for clarity. The findings from this study aim to inform NGO decision-making in implementing security measures that mitigate risks while protecting operations within limited resources. It also seeks to foster cooperation and improve security arrangements among humanitarian sectors. Ultimately, the findings will guide policy development and establish guidelines to enhance effectiveness and accountability in conflict zones. The study concluded that there is a significant relationship between private security infrastructures and the provision of security services within Juba City. This is evidenced by small p-values, less than 0.05, indicating statistical significance. The study recommends that private security companies in Juba prioritize investment in advanced security infrastructure—such as CCTV cameras, mobile patrol vehicles, security dogs, and forensic systems—to enhance the security of NGO offices and facilities. Additionally, involving staff in decision-making processes and providing leadership and management training is essential to ensure operational integrity and reliability.