1. A monitoring system comprising: a first computer including a first memory and a first processor coupled to the first memory; and a second computer including a storage device and a second processor coupled to the storage device, wherein the first processor is configured to: send a request with respect to a certain program, to the second computer, wherein the second processor is configured to: in response to receiving the request from the first computer, transmit identification information indicating at least one process stored in the storage device in association with the certain program, the at least one process being loaded in the first memory when the certain program is executed; and wherein the first processor is further configured to: receive the identification information from the second computer; and monitor whether the at least one process indicated by the received identification information exists in the first memory.