By Nicolai Kuntze, Carsten Rudolph, Aaron Alva, Barbara Endicott-Popovsky (auth.), Gilbert Peterson, Sujeet Shenoi (eds.)

Digital forensics offers with the purchase, renovation, exam, research and presentation of digital facts. Networked computing, instant communications and conveyable digital units have increased the position of electronic forensics past conventional desktop crime investigations. essentially each crime now comprises a few element of electronic proof; electronic forensics presents the recommendations and instruments to articulate this proof. electronic forensics additionally has myriad intelligence purposes. additionally, it has an essential function in details coverage -- investigations of defense breaches yield precious details that may be used to layout safer platforms. Advances in electronic Forensics VIII describes unique study effects and leading edge purposes within the self-discipline of electronic forensics. furthermore, it highlights many of the significant technical and felony matters with regards to electronic proof and digital crime investigations. The parts of assurance contain: topics and concerns, forensic strategies, cellphone forensics, cloud forensics, community forensics, and complicated forensic thoughts. This ebook is the 8th quantity within the annual sequence produced by way of the overseas Federation for info Processing (IFIP) operating team 11.9 on electronic Forensics, a global group of scientists, engineers and practitioners devoted to advancing the cutting-edge of study and perform in electronic forensics. The e-book features a number of twenty-two edited papers from the 8th Annual IFIP WG 11.9 foreign convention on electronic Forensics, held on the college of Pretoria, Pretoria, South Africa within the spring of 2012. Advances in electronic Forensics VIII is a vital source for researchers, college individuals and graduate scholars, in addition to for practitioners and members engaged in examine and improvement efforts for the legislations enforcement and intelligence groups. Gilbert Peterson is an affiliate Professor of machine Engineering on the Air strength Institute of expertise, Wright-Patterson Air strength Base, Ohio, united states. Sujeet Shenoi is the F.P. Walter Professor of machine technology and a Professor of Chemical Engineering on the college of Tulsa, Tulsa, Oklahoma, USA.

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Thus, an “unlucky” thread could be tasked to digest a well above average amount of data and, therefore, slow down the overall completion time. Another impediment to further speedup is that many of the files in the sample were small, 26 Table 2. 75 GB). 13 which increased the overhead and reduced concurrency due to extra I/O and memory-management operations. Table 3. File-parallel sdhash generation performance on 10,000 files (5 GB). 32 To better understand these effects, a synthetic set of 10,000 files (500 KB per file) was created, and the experiment was performed again.

The starting point is to define a feature as a 64-byte sequence (string) and consider all the features in an object (such as a file) as candidates. It is infeasible to collect, store and query empirical probabilities for all possible 64-byte features. Instead, a normalized Shannon entropy measure Hnorm is computed for each feature. First, the Shannon entropy is estimated as: 255 H=− P (Xi ) log P (Xi ) i=0 22 ADVANCES IN DIGITAL FORENSICS VIII where P (Xi ) is the empirical probability of encountering ASCII code i.

If the participant entered an incorrect answer, the system recorded this fact and gave visual feedback about the incorrect components. The software recorded the time taken to answer each question and the number of incorrect attempts for each component. In addition to the evaluation phase questions, the software presented the participants with questions to obtain feedback about the visualization approaches. A similar interface was used for the pre-intervention and post-intervention questionnaires.

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