This paper presents the structural analysis of a port community system (PCS) and its main stakeholders, both internal and external, who are involved in the execution of port business activities. Typical information and telecommunications infrastructure of a PCS is outlined, along with the main challenges in its introduction. Furthermore, a significant emphasis is put on information security within the PCS, presenting a firm base for the introduction of both the concept and the model of integral security. Finally, often very overlooked business functions - disaster recovery and top-level function of PCS business continuity, are defined in detail, along with the requirements for the creation of a robust business continuity plan, whose goal is to ensure the functioning of a PCS in case of disastrous event or a foreseen disruption in line with the PC ICT system risk analysis.