In this paper, we propose a novel control architecture capable of discovering cyber-attacks affecting the setpoint signal in a networked control system. We assume that the setpoint is generated by a Control Center remotely located with respect to the closed-loop system and an insecure channel is used for communications. By taking advantage of the main features of the Command Governor (CG) control paradigm, a simple Detector module is designed to detect cyber-attacks that might affect the setpoint signal. Finally, a simulation campaign, reproducing different attack scenarios, is performed to provide tangible evidence of the control architecture capabilities.