Patent ID: 8312538

Claim:
A site check method for checking whether a predetermined site is legitimate or not, the method comprising the steps of: receiving, by a first server that is provided with site identification information and provides the predetermined site, a first access from a first information terminal used by a user and creating first check information based on a time of the first access obtained from its own time information and the site identification information; displaying, by the first server, a login screen containing the created first check information on the first information terminal; receiving, by a second server that holds the site identification information provided to the first server and synchronizes a time in the second server with a time in the first server, a second access from a second information terminal used by the user and creating second check information based on a time of the second access obtained from its own time information and the site identification information; displaying, by the second server, the created second check information on the second information terminal; comparing the first check information and the second check information; and determining whether the predetermined site is legitimate based on the comparison.