A system implementing a method of providing a security data has a requesting image forming device receiving an authorization information from a user to authorize the user, and when the user is authorized, requesting a transmission of a list of security data, and at least one responding image forming device, when the transmission of the list of security data is requested, generating the list of security data based on the authorization information to transmit to the requesting image forming device. Therefore, the security data of image forming device from a remote place can be easily obtained.