The information processing system, a server and a program, and the terminal and program
To establish a technique capable of immediately responding to a cheat using an unknown cheat method or a cheat method that is difficult to detect. A history information acquisition unit 101 acquires operation history information from a plurality of player terminals 1-0 to 1-m. The feature information generation unit 102 generates feature information indicating the feature of the operation for each of a plurality of players based on a predetermined weight value obtained from the history information of the operation. The clustering unit 103 clusters a plurality of players based on the feature information for each of the plurality of players. The other player information transmission control unit 104 transmits information of other players belonging to the same group to the respective player terminals 1-0 to 1-m of the plurality of clustered players, and the other player information belonging to the other group is transmitted. Executes control to prohibit transmission of information.
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