1. An information processing device, comprising: at least one processor configured to: generate, based on a first table in a database and a first query with regard to the first table, at least one second query different from the first query; generate a graph based on the at least one second query, wherein the graph comprises a plurality of loops; determine a count of the plurality of loops in the graph; search, based on the count of the plurality of loops, for a number of a plurality of second tables in which a result of the at least one second query is not in conflict with a result of the first query, wherein the plurality of second tables are different from the first table; compare the number of the plurality of second tables with a threshold; and transmit the result of the first query to a first external device based on a result of the comparison that indicates the number of the plurality of second tables is at least equal to the threshold, wherein the first external device determines risk of homogeneity attack information, that corresponds to information about whether attribute information of an individual is specified, based on the result of the first query, and wherein the first external device transmits the result of the first query to a second external device based on the risk of the homogeneity attack information.