The present invention discloses a security confirmation system which can achieve efficient communication by optimizing an amount of transmitted data, and a method thereof. The security confirmation system includes a home master device connected to at least one security device through a first network based on a predetermined protocol, for receiving predetermined security information from the security device, generating a service security data having the security information, and transmitting the service security data, and a user terminal connected to the home master device through a second network separated from the first network, for receiving and displaying the service security data.