The present invention relates to service providing system and method for preventing a hidden camera, a service providing apparatus therefor, and a non-transitory computer readable medium having a computer program recorded thereon, and more particularly, to service providing system and method for preventing a hidden camera, a service providing apparatus therefor, and a non-transitory computer readable medium having a computer program recorded thereon which configures a relay device connected to a network in a building for detecting a hidden camera in the interior of the building, easily detects the hidden camera by analyzing a connection state of the hidden camera connected to the corresponding relay device, and then blocks the network connection of the corresponding hidden camera.