The third and final pilot demonstration of the ZONeSEC project took place in Athens, Greece on October 25-26, 2018. The demonstration showed how the ZONeSEC system can increase security for critical infrastructure by monitoring for physical and cyber threats. A variety of sensors were integrated in real-time to detect intrusions, including radar, acoustic sensors, cameras, and acceleration sensors. The ZONeSEC project, funded by the EU, aims to define a framework for wide-area surveillance that considers costs, complexity, ethics and more, in order to seamlessly monitor diverse areas and enhance infrastructure security.