FIELD: security systems.
SUBSTANCE: invention relates to a fraudulent transactions search system and method. A method of obtaining transaction data in which part of data relates to fraudulent transactions; forming a graph, in which nodes are transaction data, and ribs are transactions; determining two graph nodes related to one fraudulent transaction; determining for each of the graph nodes a list of neighborhoods, in which each of the neighborhoods is a plurality of graph nodes connected by ribs and other nodes to one of said nodes; determining a set of intersections of a list of neighborhoods of each of the determined nodes, where enumeration of neighborhoods for one of two nodes begins with the nearest neighborhood to the given node, and for the other from the outermost neighborhood, which includes the opposite node; determining graph nodes included in intersection of list of neighborhoods of two nodes; determining and constructing a shortest route between said nodes; identifying nodes included in a certain shortest route, for which data on transactions do not have information on their belonging to fraudulent; recording data on transaction into database.
EFFECT: technical result consists in increase of processing speed of multiple transactions to detect fraudulent transactions.
3 cl, 10 dwg
