Evaluating A Selection of Tools for Extraction of Forensic Data: Disk ...

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Figure 3.4. Process of OTSO method (Kontio, 1996, p.3). A detailed flow chart of the evaluation criteria definition process is shown in Figure 3.5. The criteria definition flows logically from searching criteria definition, further defining criteria and assigning weighting criteria. Product evaluation is then conducted based on the criteria defined in the earlier stage. Analysis is done on the raw data generated from the evaluation. The data analysis using WSM assigns a value from 1 to 5 to each criterion. 51
Figure 3.5. Process of evaluation criteria definition from Kontio (1996, p.4) Weighting is assigned to each criterion in the previous stage and normalised into the total of 1. Then the score is calculated based on the following formula: Another method called AHP was also used to analyse the data evaluation. AHP is a multiple criteria decision making method that decomposes the criteria into a hierarchical structure. Each level of hierarchy will assign its importance factor by comparing each item in the level in pairs. Finally, the alternatives will compare in pairs again to determine their rankings. The one with the highest ranking is recommended as the best alternative. The reason for reviewing this article is that COTS evaluation has many aspects that are of value to this study, starting from requirement specification to software evaluation. The research process of OTSO is a logical development of a successful 52
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Evaluating A Selection of Tools for
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Acknowledgements This thesis has be
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imaging data when building disk ima
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2.3.3.1 dcfldd ....................
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4.3 Research Analysis .............
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List of Tables Table 2.1: Existing
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AI Access Interface AM Access Metho
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SWGDE Scientific Working Group on D
Page 17 and 18: NetIntercept Network monitoring and
Page 19 and 20: The aim of this chapter is to provi
Page 21 and 22: producing unreliable results. Extra
Page 23 and 24: 1.4 CONCLUSION Chapter 1 is concern
Page 25 and 26: forensic software EnCase and Sleuth
Page 27 and 28: 2.1.2 Investigative Processes And S
Page 29 and 30: Preparation Collection Examination
Page 31 and 32: 13 Investigative Process Model (Fre
Page 33 and 34: eaders to have better understanding
Page 35 and 36: text or hexadecimal format (Adopted
Page 37 and 38: 3. Duplicability and Modifiability
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Page 43 and 44: forensic tools, process or procedur
Page 45 and 46: Guo et al. (2009) have proposed a f
Page 47 and 48: Table 2.4 Mandatory features of Dis
Page 49 and 50: 2.3.3.2 dc3dd Dc3dd is another enha
Page 51 and 52: area to backup their Proprietary so
Page 53 and 54: Also, MBR disks only support four p
Page 55 and 56: Table 2.6 Functionalities of Disk I
Page 57 and 58: for digital investigation to identi
Page 59 and 60: studies and discussions, the requir
Page 61 and 62: answered. Details of data collectio
Page 63 and 64: experts will be used to narrow down
Page 65 and 66: anomalies are analysed to identify
Page 67: esulting acceptance spectrum can be
Page 71 and 72: Stage 1 Understand the discipline o
Page 73 and 74: Testing requirements Selected disk
Page 75 and 76: Phase 1 Select the software disk im
Page 77 and 78: connected to the computer using a P
Page 79 and 80: When the acquired images are saved
Page 81 and 82: 3.4.3 Data Analysis Methods GA is a
Page 83 and 84: There are many other types of hardw
Page 85 and 86: Main Research Question Sub Question
Page 87 and 88: 4.1 VARIARTIONS IN RESEARCH SPECIFI
Page 89 and 90: 4.2.1 Testing Environment Two execu
Page 91 and 92: Using program HDAT2, HPA and DCO ar
Page 93 and 94: 4.2.2.3 TC-03: Acquiring A Hard Dri
Page 95 and 96: Table 4.7 TC-06 Result Summary Test
Page 97 and 98: FTK Imager successfully verified th
Page 99 and 100: Assertions AHS01-03 AFR01-03 AFR01-
Page 101 and 102: Helix 3 pro was unable to recover t
Page 103 and 104: Helix 3 Pro was not able to read th
Page 105 and 106: The method of data analysis is desc
Page 107 and 108: 4.4 PRESENTATION OF FINDINGS A summ
Page 109 and 110: Pass Rates (%) 100.00% 90.00% 80.00
Page 111 and 112: Pass Rate (%) 100.00% 90.00% 80.00%
Page 113 and 114: 5.0 INTRODUCTION Chapter 5 Discussi
Page 115 and 116: tools. For instance, the test case
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information of the total number of
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Helix 3 Pro presented some usabilit
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Software support is minimum and the
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2.2.4, forensic software validation
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elease version mounts file systems
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and TC-18, AIR has outperformed oth
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6.0 INTRODUCTION Chapter 6 Conclusi
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inconsistent with what is stated in
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eginning of and the end of the disk
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6.4 CONCLUSION The main objective o
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Beebe, N. L., & Clark, J. G. (2005)
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Erbacher, R. F. (2010). Validation
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Kunda, D., & Brooks, L. (1999). App
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Payne, C. (2002). On the Security o
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Smith, R. (2009). Make the most of
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Cases Daubert v. Merrell Dow Pharma
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Appendix 2 - Testing requirements 1
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06 format should contain same data
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Test Cases Description Assertions f
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Assertions for Fundamental Requirem
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TSP-AIC-10 TSP-AIC-11 image file fo
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4.1 Drive Reset (Common in most Tes
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This procedure outlines the process
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7. Keep setting “noerror, sync”
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Appendix 6 - Gap Analysis Matrix 15
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Image Creation (IC) Function Requir
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Appendix 7 - Disk Imaging Tools Tes
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FTK Imager 2.9.0.1385 (Release Date
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Source Device: Drive Setup: Log hig
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Log highlights: Results by assertio
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1.6 TC-02-FAT16 FTK Imager 2.9.0.13
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Source Device: Drive Setup: Partiti
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1.10 TC-02-HFS+ FTK Imager 2.9.0.13
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1.12 TC-03-DCO FTK Imager 2.9.0.138
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1.13 TC-05-DD FTK Imager 2.9.0.1385
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1.14 TC-05-Smart FTK Imager 2.9.0.1
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Drive Setup: Log highlights: Result
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Results by assertion: FTK Imager 2.
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1.19 TC-10-CorruptImage FTK Imager
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1.21 TC-11-E01_Smart FTK Imager 2.9
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1.25 TC-11-Smart_E01 FTK Imager 2.9
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Results by assertion: verified FTK
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Helix3 Pro R3 (Release Date: 30 th
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Results by assertion: Helix3 Pro R3
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2.3. TC-02-NTFS Helix3 Pro R3 (Rele
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Device: Serial Number: 6PS2CA4Z Sec
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Partition Table: Log highlights: Re
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2.11. TC-03-DCO Helix3 Pro R3 (Rele
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2.12. TC-05-EnCase6 Helix3 Pro R3 (
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2.13. TC-06-UNC Helix3 Pro R3 (Rele
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2.14. TC-07-InsufficientSpace & TC-
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Drive Setup: Partition Table (GPT d
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AIR 2.0.0 (Release Date: 17th, Feb
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3.3. TC-02-NTFS Test Case TC-02-NTF
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3.4. TC-02-Ext2 AIR 2.0.0 (Release
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3.5. TC-02-Ext3 AIR 2.0.0 (Release
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3.6. TC-02-FAT16 Test Case TC-02-FA
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Results by assertion: AIR 2.0.0 (Re
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3.17. TC-13 Overlapping Partitions
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3.21. TC-16-02 Acquire a GPT disk A
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