A data transfer analysis system is disclosed that analyzes data transfer log entries to determine whether a data transfer is authorized. The system determines information about the data assets involved in the data transfer (e.g., network address, geographical location, etc.) and uses a data map to determine if data transfers are authorized between the two data assets. If not, the system may take one or more actions, such as generating a notification, terminating the data transfer, restricting the access of the user that initiated the transfer, modifying network communications capabilities between the assets to prevent future transfers, and storing metadata that can be used to prevent future such transfers.