An assembly allows detecting an intrusion into an appliance that includes a chamber(s). At least one wall relating to one and the same chamber is designed, so as to form a chamber opening allowing to access at least one appliance chip. The assembly includes at least one baffle that is, each, disposed at the chamber opening. The assembly includes at least one chip that comprises a baffle manager. The baffle manager is configured to cause the at least one baffle to move repeatedly between a first and a second position with respect to the chamber opening, during an appliance chip operation. The baffle manager is configured to detect whether a baffle movement is slowed or blocked during the appliance chip operation. If yes, the baffle manager is configured to send a predetermined signal(s) for alerting the appliance chip or a device(s) or take an action(s).