A non-transitory computer readable medium stores a program causing a computer to execute a process for information processing, the process including: acquiring operation histories of registered users from a system; presenting a question about an operation history in the system to a requesting user who has requested a clue about user information and receiving entry of an answer to the question; and specifying, from the registered users, a candidate corresponding to the requesting user in accordance with a degree of matching of the received answer from the requesting user with the acquired operation histories of the registered users and then offering a clue about user information of the specified candidate to the requesting user.