Patent attributes
The present invention concerns the field of data dissemination tracking, in particular aims at keeping track of the various devices in which a given data was used. It is proposed a method to track the dissemination of a first data set carried out by a first tracking server (CS1), a first device and a second device, said data set comprising a data management section and a data payload, said data management section comprising a data identifier and data usage information defining a security conformance level, said method comprising the steps of:—receiving by the first tricking server (CS1) from the first device (d0), a first device identification and at least a data management section of a first set of data, said data management section comprising at least a security conformance level and a first data identifier,—identifying or creating in the database, a current graph data set corresponding to the first data identifier, said current graph data set comprising a common section, edges and nodes,—storing in the current graph data set, said first data management section in the common section and said first identifier as a first node,—receiving by the first tracking server (CS1) a request to transfer the first data set from the first device to the second device, said request comprising at least a second device identification of the second device and the first data identifier,—retrieving by the first tracking server (CS1) second device security conformance level, based on the second device identification,—verifying by the first tracking server (CS1) that the second device security conformance level meets the security conformance level of the first data set as identifier by the first data identifier,—in the positive event, responding by granting authorisation to the transfer at least the data payload of the first data set to the second device,—recording in tire database, in respect with the current graph data set, the second device identifier as a second graph data node,—recording in the database, in respect with the current graph data set, a transaction from the first device to second device as an edge in the current graph data set linking the first graph node and the second graph node.
