1. A method of projecting a false apparent computer network view for protecting a real computer network against hackers, the method comprising: receiving, using at least one hardware processor, into a physical computer network one or more requests from a network mapping tool executed by a user for an identification of a number of nodes and internet protocol (IP) addresses of nodes in the physical computer network; determining that security is compromised based on a network location of the user and accordingly selecting a definition of a false apparent view of a network configuration of the physical computer network; building the response, including a false number of nodes and at least one false IP address of a node in the physical computer network, to the one or more requests based on the selected definition of the false apparent view; and sending the response to the network mapping tool through the computer network.