Insider Threats are Getting Worse within Industries: Isolated Secondary Backup Required

Recently, several severe cyber attacks to commercial networks and their systems have been found more frequently compared to the last half decade. According to the analysis results from the experts, most of the attacks had similar approach to reach their goal: compromising the web server and bridging to the storage server instead of direct penetrating through the firewalls within the intranet. Because web servers are usually easier to compromise than other insiders in the server farm, this unwanted approach would be common for hackers. This means that the servers in the secured server farm became unsafe and the storage server has no exception. Because of the reason, this paper introduces the concept of the secondary backup and proposes a consequent framework.