Abstract: Provided is an information leakage prevention technique which does not require a dedicated device for access management on a network, and which offers excellent security policy flexibility. An information leakage prevention system comprises: a client terminal including a client processing unit which performs network control in accordance with an acquired security policy; and a management server including a user database in which information concerning a user of the client terminal is stored, a security policy database in which a security policy defining a network control content for each attribute of the user is stored, and a server processing unit which selects the security policy on the basis of the attribute of the user and a time of delivery of the security policy, and which transmits the selected security policy to the corresponding client terminal.

Abstract: Provided is an information leakage prevention technique which does not require a dedicated device for access management on a network, and which offers excellent security policy flexibility. An information leakage prevention system comprises: a client terminal including a client processing unit which performs network control in accordance with an acquired security policy; and a management server including a user database in which information concerning a user of the client terminal is stored, a security policy database in which a security policy defining a network control content for each attribute of the user is stored, and a server processing unit which selects the security policy on the basis of the attribute of the user and a time of delivery of the security policy, and which transmits the selected security policy to the corresponding client terminal.

Abstract: A malware analysis method for analyzing malware using a virtual computer includes acquiring a request from the malware to the guest OS. If the request from the malware includes a request pertaining to a virtual environment, an analysis unit issues a spoofed response to the malware in response to the request.

Abstract: In an emergable watermark superimposing method for superimposing a superimposition image on either a cover still image or a still image formed from a cover moving image, when an image after the superimposition image is superimposed thereon is converted, or a screen which displays thereon the image after the superimposition image is superimposed is photographed, the superimposition image is superimposed so as to be more emphasized.

Abstract: An embodiment of this invention is an image processing device, including: a sectioning unit for sectioning an image into a plurality of sections to be processed; and a classification unit for classifying the plurality of sections to be processed into at least a clarification-processing-adapted area for embedding a latent image into the image, and an obfuscation-processing-adapted area for embedding a digital watermark into the image based on a characteristic of the image.

Abstract: An embodiment of this invention is an image processing device, including: a sectioning unit for sectioning an image into a plurality of sections to be processed; and a classification unit for classifying the plurality of sections to be processed into at least a clarification-processing-adapted area for embedding a latent image into the image, and an obfuscation-processing-adapted area for embedding a digital watermark into the image based on a characteristic of the image.

Abstract: In an emergable watermark superimposing method for superimposing a superimposition image on either a cover still image or a still image formed from a cover moving image, when an image after the superimposition image is superimposed thereon is converted, or a screen which displays thereon the image after the superimposition image is superimposed is photographed, the superimposition image is superimposed so as to be more emphasized.