Abstract text

A computer readable medium stores a program for controlling access to electronically stored information. The program causes a computer to execute a process including receiving first user information indicating a first user who performs an operation of changing an access right, second user information indicating a second user having the access right, and operation information indicating the operation; extracting grantor information corresponding to grantee information representing the second user information from access right grantor/grantee correspondence information in which grantor information indicating a grantor who has granted an access right to perform an operation on information is related to grantee information indicating a grantee granted the access right by the grantor; determining whether or not the extracted grantor information represents the first user information; and changing the access right indicated by the operation information if it is determined that the extracted grantor information represents the received first user information.