Date Added: Jul 2012
Cloud services are so efficient and flexible to expend and manage the service so that various cloud services are commercially implemented and provided by top cloud computing companies. As could service are quickly deployed, more security problems occurs and cloud forensic procedures for cloud systems are needed. But, in multi-users serviced cloud systems, a system suspension makes serious problems to users so that collecting evidences and analysis have to be performed in the field and live analysis is important in cloud systems. Cloud system based on Hadoop distributed file system has characteristics of massive volume of data and multi-users, physically-distributed data, and multi-layered data structures. The previous forensic procedures and methodologies are not appropriate for cloud system based on Hadoop distributed file system.