Abstract: A remote access method include acquiring a virtual machine image including a remote access function to be temporarily executed during booting of a virtual machine; generating the virtual machine using the virtual machine image; executing the remote access function included in the virtual machine image after booting of the virtual machine starts; and, in response to occurrence of an error during booting of the virtual machine, guiding an owner of the virtual machine through an access scheme to the remote access function of the virtual machine in which booting is pending based on the remote access function.

Abstract: Disclosed is a location information determining method and system for providing a variety of services based on a location. The location information determining method includes receiving cell information; and determining location information that matches the cell information as location information of a mobile terminal from a location information database that stores location information that matches a plurality of pieces of cell information, respectively.

Abstract: Disclosed is a webshell detection method that detects a webshell by collecting process information about a process in execution on a server providing a web service and by determining whether the process is executed by a webshell based on the collected process information.