Nowadays,the capability of traditional digital forensic tools fails to meet the demand of ever increasing of criminal or civil cases.One of the challenges is that digital devices and applications are multifarious and changing quickly.Here,we propose a new mode for digital forensic tools utilization via integrating open-source single tools into a platform and setting up into Live DVD/USB.The platform,an Integrated Open Forensic Environment(named IOFE),takes full advantage of these tools and,at the same time,elevates its power and interoperability via standardized input/output data.The IOFE features conducting live and dead investigation and covers three consecutive major phases of digital forensics:acquisition,analysis,and presentation.Our experiments prove that IOFE can carry out manifold acquisition,interpretation,analysis,and presentation task of evidentiary data in an efficient and effective manner.
For the lack of detailed semantic in prior works,a transparent fine-grained monitoring technique(cMonitor)is proposed.Deployed outside the virtual machines,the cMonitor utilizes the elevated privileges of the virtual machine monitor to monitor the network connection,the processes and the relationship between them in protected systems by reconstructing fine-grained system semantics.These semantics contain process states and corresponding network connection.Experimental results show that cMonitor not only can be rapidly deployed in realistic cloud,but also can effectively and universally obtain these fine-grained semantics to assist detection of some advanced network attack.Meanwhile,the network performance overhead is about 3%,which is acceptable.
In this paper, a novel concept of multilayer synthesis and a general framework for texture synthesis method are presented. Within this framework, we first decompose the texture into the supposed pattern layer and material layer in the frequency domain by an E-texton extracting algorithm, then manipulate and extend them respectively according to their own personalities, and finally merge the newly synthesized pattern layer and material layer again to generate the final output. Experiment results show that our method not only greatly improves the synthesis quality for those cases that single-layer synthesis cannot handle well but also provides an ability of achieving various special synthesis effects.
