A method and an apparatus for repercussion-free capture of data from at least one device is provided, which is arranged in a first network having a high security requirement, in a second network having a low security requirement, containing a requesting unit, which is arranged within the first network and is designed to request data from the at least one device in accordance with a request profile, a monitoring unit, which is arranged within the first network and is designed to monitor data that have been sent by the at least one device in response to the request and to transmit said data to an evaluation unit, an evaluation unit, which is arranged in the second network and is designed to compare the monitored data with the data expected on the basis of the request profile, and an alarm unit.