An information processing system includes: an organization information storage that stores organization information which defines an organization including users and groups of the users; a usage control information storage that stores usage control information which is for controlling use of control target information by each user in the organization defined by the organization information and defining a user or a group of users who or which is permitted to use the control target information and a usage range of the control target information in which the user or the group of the users is permitted to use the control target information; a judgment unit that judges whether or not an inconvenience resulting from a change of the organization occurs in the usage control information stored in the usage control information storage based on the organization information stored in the organization information storage; and a countermeasure unit that performs a countermeasure against the inconvenience in a case where the judgment unit judges that the inconvenience resulting from the change of the organization occurs.