A plug for detecting tampering of a container is configured to close an opening of the container. The plug includes an attachment device for attaching the plug to the opening of the container, a motion sensor for sensing rotation of the plug with respect to the container, a communication device for communicating with a server, a microcontroller unit and a memory unit. The microcontroller unit is configured to compare a sensed rotation of the plug to a service schedule stored in the memory and detect the tampering of the container based on the comparison.