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https://www.um.edu.mt/library/oar/handle/123456789/27601
Title: | Using thumbnail affinity for fragmentation point detection of JPEG files |
Authors: | Birmingham, Brandon Farrugia, Reuben A. Vella, Mark Joseph |
Keywords: | JPEG (Image coding standard) Computer networks -- Security measures File conversion (Computer science) |
Issue Date: | 2017 |
Publisher: | Institute of Electrical and Electronics Engineers Inc. |
Citation: | Birmingham, B., Farrugia, R. A., & Vella, M. (2017). Using thumbnail affinity for fragmentation point detection of JPEG files. 17th IEEE International Conference on Smart Technologies, EUROCON 2017, Ohrid. 3-8. |
Abstract: | File carving tools carry out file recovery whenever the file-system meta-data is not available, which makes them a valuable addition to the cyber crime investigator's toolkit. Existing file carvers either cannot handle fragmented files or require a probabilistic model derived using a number of training images. This training data may not always be feasible to aggregate or its sheer size could undermine practicality. Similar to existing techniques, our method exploits both the JPEG syntax and semantic-based analysis steps in order to distinguish the correct fragments required for recovering images. The thumbnail affinity-based semantic analysis constitutes the novel aspect of this approach. Comparative evaluation using three widely used benchmark test sets show that our carver compares with the state-of-the-art commercial tool that requires an a-priori model while beating a number of popular forensic tools. This outcome demonstrates the successful replacement of the probabilistic model with thumbnail affinity, rendering this technique the right complement for existing carvers in situations where thumbnail information is readily available. |
URI: | https://www.um.edu.mt/library/oar//handle/123456789/27601 |
Appears in Collections: | Scholarly Works - FacICTCCE |
Files in This Item:
File | Description | Size | Format | |
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Using_Thumbnail_Affinity_for_Fragmentation_Point_Detection_of_JPEG_Files_2017.pdf Restricted Access | 300.51 kB | Adobe PDF | View/Open Request a copy |
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