System comprising an encryption device and a control unit for monitoring the encryption device, • wherein the encryption device is embodied to encrypt data, • wherein the control unit comprises a sensor unit and a processing unit, • wherein the sensor unit is embodied to receive first signals from sensors which are used to detect a movement of the encryption device and/or an impact of a mechanical and/or electromagnetic force on the encryption device, wherein the sensor unit is further embodied to send second signals to the processing unit, • wherein the second signals contain at least one first item of information, which is already contained in the first signals, wherein the processing unit is embodied to make the first item of information relating to the second signals available to the encryption device, wherein the first item of information signals that the movement of the encryption device and/or the impact of the mechanical and/or electromagnetic force on the encryption device is occurring, • wherein the first item of information is embodied such that as a response the encryption device introduces measures to protect the data, • wherein the control unit is provided with an interface for connecting external logic, wherein the external logic comprises an operating state controller of the encryption device, which is embodied to change an operating state of the encryption device, wherein the processing unit is embodied, as a response to the first item of information, to send a second item of information to the external logic, wherein the second item of information signals that the movement of the encryption device and/or the impact of the mechanical and/or electromagnetic force on the encryption device is occurring, wherein the second item of information prompts the operating state controller to change the operating state of the encryption device, • wherein in the event that the result of the evaluation by means of the processing unit is that a security-critical situation exists for the encryption device to be monitored, the processing unit sends a signal to a potential-free relay contact, which then actuates an off switch for the operation of the encryption device to be monitored and wherein in the event that the result of the evaluation of the processing unit is that a security-critical situation is not or no longer present, sends a signal to the interface for external logic, which effects an actuation of a reset button for resuming the operation of the encryption device to be monitored. • wherein the encryption device is embodied to encrypt data, • wherein the control unit comprises a sensor unit and a processing unit, • wherein the sensor unit is embodied to receive first signals from sensors which are used to detect a movement of the encryption device and/or an impact of a mechanical and/or electromagnetic force on the encryption device, wherein the sensor unit is further embodied to send second signals to the processing unit, • wherein the second signals contain at least one first item of information, which is already contained in the first signals, wherein the processing unit is embodied to make the first item of information relating to the second signals available to the encryption device, wherein the first item of information signals that the movement of the encryption device and/or the impact of the mechanical and/or electromagnetic force on the encryption device is occurring, • wherein the first item of information is embodied such that as a response the encryption device introduces measures to protect the data, • wherein the control unit is provided with an interface for connecting external logic, wherein the external logic comprises an operating state controller of the encryption device, which is embodied to change an operating state of the encryption device, wherein the processing unit is embodied, as a response to the first item of information, to send a second item of information to the external logic, wherein the second item of information signals that the movement of the encryption device and/or the impact of the mechanical and/or electromagnetic force on the encryption device is occurring, wherein the second item of information prompts the operating state controller to change the operating state of the encryption device, • wherein in the event that the result of the evaluation by means of the processing unit is that a security-critical situation exists for the encryption device to be monitored, the processing unit sends a signal to a potential-free relay contact, which then actuates an off switch for the operation of the encryption device to be monitored and wherein in the event that the result of the evaluation of the processing unit is that a security-critical situation is not or no longer present, sends a signal to the interface for external logic, which effects an actuation of a reset button for resuming the operation of the encryption device to be monitored.