Date Added: Jan 2012
With the development of the Internet, many people are able share information freely, and check for information from various parts of the world in real time. Internet brought about the development of diverse industries, and its utilization is likely to increase through combination with many types of media in the future. However, the Internet also causes some problems. A computer can be infected with malicious codes only from a user visiting website, and personal information can be leaked from an infected PC. In particular, malicious codes are spreading, using the search word containing the social issue.