In one example of the present disclosure, a method for processing data of an analytical instrument for analyzing biological samples, the method comprising receiving instrument data from the analytical instrument at a data processing module communicatively connected with the analytical instrument, generating metadata from the received instrument data at the data processing module, applying a first encryption to the instrument data at the data processing module, applying a second encryption to the generated metadata at the data processing module, transmitting the encrypted metadata and encrypted instrument data to a remote server, wherein the remote server and the data processing module are communicatively connected, removing the second encryption from the metadata at the remote server and forwarding the instrument data encrypted by the first encryption from the remote server to a management system of the analytical instrument.