system and method of malware scanning

The present invention relates to a system and a method for maintaining final change time information of each folder, the latest malware scanning time, and diagnosis engine version information and for determining whether the malware of files included in the corresponding folders is scanned or not. A malware scanning system according to the present invention comprises: a folder information database for storing the folder structure information of a hard disc, the change time of each folder, the latest malware scanning time, and the latest malware scanning engine version information; a file change information collecting unit for collecting a path of a changed file and change time information from the hard disc so as to update the change time of a folder corresponding to the path of the changed file in the folder information database; a scanning target determining unit for determining a scanning target folder on the basis of the change time of each of the folders stored in the folder information database, the latest malware scanning time, the latest malware scanning engine version information, and information on the version of an engine to be currently scanned; and a diagnosis unit for executing the malware scanning for the files of the folder determined as the scanning target in the scanning target determining unit.