The Digital Forensic has been carried out mainly by institution such as Police, Prosecutor's office and the government agencies which have capacity of law enforcement. But as the more Digital Contents Service market has grown, the more responsibility of OSP (Online Service Provider) has grown either. Increasing sort of digital contents, DFS (Digital Forensic Service) for Business is necessary to whoever provide their own services, such as Online Game, Internet banking and data for confidential information etc. We suggest the DFS as for the business product in this paper. Also the technical methods are introduced here that can be applied for each segment with appropriate skills using the STP Strategy in the marketing theory. It is explained how to divide the service group as Segmentation, bind them up as Targeting and place them as Positioning with these technical methods in a real business environment.