An electronic device is provided. The electronic device comprises a communication circuit and at least one processor functionally connected to the communication circuit. The at least one processor can be configured to: acquire data to be transmitted to a server; allow a fingerprint to be inserted into the data; generate a plurality of pieces of split data by dividing, into a first size, the data into which the fingerprint is inserted, wherein pieces of data of a second size overlap with each other between pieces of adjacent split data from among the plurality of pieces of split data; select one piece of split data from among the plurality of pieces of split data according to preset position-specific selection probabilities for the plurality of pieces of split data; and transmit, to the server, a report generated by obfuscating the selected one piece of split data. Other various embodiments can be provided.