Results 251 to 260 of about 533,194 (286)

Byte embeddings for file fragment classification

Future Generation Computer Systems, 2022
Abstract In digital forensics, file carving is the process of recovering files on a storage media in part or in whole without any file system information. An important problem in file carving is the identification of fragment types. Many fragment classification studies in the literature employ inflexible and indiscernible feature selection methods ...
Md. Enamul Haque, Mehmet Engin Tozal
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Approaches to the classification of high entropy file fragments [PDF]

Digital Investigation, 2013
In this paper we propose novel approaches to the problem of classifying high entropy file fragments. We achieve 97% correct classification for encrypted fragments and 78% for compressed. Although classification of file fragments is central to the science of Digital Forensics, high entropy types have been regarded as a problem. Roussev and Garfinkel [1]
Philip Penrose, Richard Macfarlane, William J Buchanan   +2 more
exaly   +2 more sources

Identification of image fragments for file carving

World Congress on Internet Security (WorldCIS-2013), 2013
Recovering images intact is an important process in digital forensics, as they may represent primary evidences in crime cases such as child pornography. Due to file syetems' fragmentation mechanisms, images may be split into several fragments on a physical storage.
Ahmad AlMulhem
exaly   +2 more sources

Resurrection: A Carver for Fragmented Files

2014
The recovery of deleted files is an important task frequently carried out by professionals in digital forensics and data recovery. When carried out without information from the file system, this process is called file carving. The techniques implemented in today’s file carvers are mostly sufficient for non-fragmented files.
Martin Lambertz, Rafael Uetz, Elmar Gerhards-Padilla   +2 more
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Neural Networks for File Fragment Classification

2019 42nd International Convention on Information and Communication Technology, Electronics and Microelectronics (MIPRO), 2019
Abstract - File fragment classification is an important step in file forensics in which filetypes are assumed based on their available content fragments. Methods typically used for this task utilize machine learning techniques on features like byte frequency distributions and fragment entropy measures.
Kristijan Vulinovic, Lucija Ivkovic, Juraj Petrovic, Kristian Skracic, Predrag Pale   +4 more
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MiF: Mitigating the Intra-file Fragmentation in Parallel File System

2011 International Conference on Parallel Processing, 2011
Parallel file systems have been broadly deployed in large scale data centers, supporting a wide range of applications across a variety of industries. Unfortunately, most parallel file systems suffer from the intra-file fragmentation which is the disk performance killer.
Letian Yi, Jiwu Shu, Youyou Lu, Wei Wang, Weimin Zheng   +4 more
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Dynamic storage fragmentation and file deterioration

IEEE Transactions on Software Engineering, 1986
As a result of insertions and deletions, a file tends to be cluttered with deleted records which are physically present. These unwanted records cause fragmentation within the file and give rise to additional access overhead because they have to be skipped over during processing.
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Belief Fragments and Mental Files

2021
Belief fragments and mental files are based on the same idea: that information in people’s minds is compartmentalized rather than lumped all together. Philosophers mostly use the two notions differently, though the exact relationship between fragments and files has yet to be examined in detail. This chapter has three main goals.
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Roadmap to Approaches for Carving of Fragmented Multimedia Files

2011 Sixth International Conference on Availability, Reliability and Security, 2011
File carving is a recovery technique which does not consider file tables or other meta-data which is used to organize data on storage media. As files can be recovered based only on their content and/or structure this technique is an indispensable task during digital investigations. The main contribution of this paper is a survey about new approaches in
Rainer Poisel, Simon Tjoa
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Duplications and Misattributions of File Fragment Hashes in Image and Compressed Files

2018 9th IFIP International Conference on New Technologies, Mobility and Security (NTMS), 2018
Hashing is used in a wide variety of security contexts. Hashes of parts of files, fragment hashes, can be used to detect remains of deleted files in cluster slack, to detect illicit files being sent over a network, to perform approximate file matching, or to quickly scan large storage devices using sector sampling.
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