Design of inside information leakage prevention system in ubiquitous computing environment

This study designed a system that prevents the leakage of information flowing through physical communication networks in ubiquitous computing environment. The information security system was designed from the viewpoint of information life cycle based on u-Office' service scenario and, as a result, security holes were identified including indiscreet information access, malicious information leakage, unauthorized information alteration, illegal information retrieval, information leakage using various portable storage devices and printed-out information leakage. In addition, this study defined and designed essential security technology required to resolve these security holes.