The Experts below are selected from a list of 66 Experts worldwide ranked by ideXlab platform

V. Prasanna Venkatesan - One of the best experts on this subject based on the ideXlab platform.

  • Steganalysis Using Color Model Conversion
    arXiv: Cryptography and Security, 2012
    Co-Authors: P. Thiyagarajan, G. Aghila, V. Prasanna Venkatesan
    Abstract:

    The major threat in cyber crime for Digital Forensic Examiner is to identify, analyze and interpret the concealed information inside Digital medium such as image, audio and video. There are strong indications that hiding information inside Digital medium has been used for planning criminal activities. In this way, it is important to develop a steganalysis technique which detects the existence of hidden messages inside Digital medium. This paper focuses on universal image steganalysis method which uses RGB to HSI colour model conversion. Any Universal Steganalysis algorithm developed should be tested with various stego-images to prove its efficiency. The developed Universal Steganalysis algorithm is tested in stego-image database which is obtained by implementing various RGB Least Significant Bit Steganographic algorithms. Though there are many stego-image sources available on the internet it lacks in the information such as how many rows has been infected by the steganography algorithms, how many bits have been modified and which channel has been affected. These parameters are important for Steganalysis algorithms and it helps to rate its efficiency. Proposed Steganalysis using Colour Model has been tested with our Image Database and the results were affirmative.

Venkatesan V. Prasanna - One of the best experts on this subject based on the ideXlab platform.

  • Steganalysis Using Color Model Conversion
    2012
    Co-Authors: Thiyagarajan P., Aghila G., Venkatesan V. Prasanna
    Abstract:

    The major threat in cyber crime for Digital Forensic Examiner is to identify, analyze and interpret the concealed information inside Digital medium such as image, audio and video. There are strong indications that hiding information inside Digital medium has been used for planning criminal activities. In this way, it is important to develop a steganalysis technique which detects the existence of hidden messages inside Digital medium. This paper focuses on universal image steganalysis method which uses RGB to HSI colour model conversion. Any Universal Steganalysis algorithm developed should be tested with various stego-images to prove its efficiency. The developed Universal Steganalysis algorithm is tested in stego-image database which is obtained by implementing various RGB Least Significant Bit Steganographic algorithms. Though there are many stego-image sources available on the internet it lacks in the information such as how many rows has been infected by the steganography algorithms, how many bits have been modified and which channel has been affected. These parameters are important for Steganalysis algorithms and it helps to rate its efficiency. Proposed Steganalysis using Colour Model has been tested with our Image Database and the results were affirmative.Comment: arXiv admin note: substantial text overlap with arXiv:1206.258

P. Thiyagarajan - One of the best experts on this subject based on the ideXlab platform.

  • Steganalysis Using Color Model Conversion
    arXiv: Cryptography and Security, 2012
    Co-Authors: P. Thiyagarajan, G. Aghila, V. Prasanna Venkatesan
    Abstract:

    The major threat in cyber crime for Digital Forensic Examiner is to identify, analyze and interpret the concealed information inside Digital medium such as image, audio and video. There are strong indications that hiding information inside Digital medium has been used for planning criminal activities. In this way, it is important to develop a steganalysis technique which detects the existence of hidden messages inside Digital medium. This paper focuses on universal image steganalysis method which uses RGB to HSI colour model conversion. Any Universal Steganalysis algorithm developed should be tested with various stego-images to prove its efficiency. The developed Universal Steganalysis algorithm is tested in stego-image database which is obtained by implementing various RGB Least Significant Bit Steganographic algorithms. Though there are many stego-image sources available on the internet it lacks in the information such as how many rows has been infected by the steganography algorithms, how many bits have been modified and which channel has been affected. These parameters are important for Steganalysis algorithms and it helps to rate its efficiency. Proposed Steganalysis using Colour Model has been tested with our Image Database and the results were affirmative.

Thiyagarajan P. - One of the best experts on this subject based on the ideXlab platform.

  • Steganalysis Using Color Model Conversion
    2012
    Co-Authors: Thiyagarajan P., Aghila G., Venkatesan V. Prasanna
    Abstract:

    The major threat in cyber crime for Digital Forensic Examiner is to identify, analyze and interpret the concealed information inside Digital medium such as image, audio and video. There are strong indications that hiding information inside Digital medium has been used for planning criminal activities. In this way, it is important to develop a steganalysis technique which detects the existence of hidden messages inside Digital medium. This paper focuses on universal image steganalysis method which uses RGB to HSI colour model conversion. Any Universal Steganalysis algorithm developed should be tested with various stego-images to prove its efficiency. The developed Universal Steganalysis algorithm is tested in stego-image database which is obtained by implementing various RGB Least Significant Bit Steganographic algorithms. Though there are many stego-image sources available on the internet it lacks in the information such as how many rows has been infected by the steganography algorithms, how many bits have been modified and which channel has been affected. These parameters are important for Steganalysis algorithms and it helps to rate its efficiency. Proposed Steganalysis using Colour Model has been tested with our Image Database and the results were affirmative.Comment: arXiv admin note: substantial text overlap with arXiv:1206.258

Timothy R. Leschke - One of the best experts on this subject based on the ideXlab platform.

  • Applying data visualization techniques to support the analysis of Digital Forensic data
    2013
    Co-Authors: Charles Nicholas, Timothy R. Leschke
    Abstract:

    The Modern Age of Digital Forensics is characterized by a proliferation of artifacts, increased data complexity, larger and cheaper data storage, and the emergence of the need for tools that support timeline analysis, anomaly detection, and triage. Traditional text-based Digital Forensic tools can no longer keep pace with the demands of the modern Digital Forensic Examiner. A new approach for developing Digital Forensic tools is required if Digital Forensics is going to avoid becoming stagnant. We apply the power of data visualization to support the needs of the modern Digital Forensic Examiner. We design and develop a tool called Change-Link; a coordinated and multiple view tool which uses semantic zooming in the form of an overview, treeview, directory content view, and a metadata view to provide an understanding of Digital Forensic data that changes over time. By using this tool to examine a mock evidence hard drive containing shadow volume data provided by the Microsoft Volume Shadow Copy Service, we demonstrate a way to reduce data complexity and provide better Forensic data analysis while supporting timeline analysis, anomaly detection, and a triage of the dataset. We demonstrate a proof for our broader hypothesis which is data visualization techniques can be developed to support better analysis of Digital Forensic data.

  • VizSEC - Change-Link: a Digital Forensic tool for visualizing changes to directory trees
    Proceedings of the Ninth International Symposium on Visualization for Cyber Security - VizSec '12, 2012
    Co-Authors: Timothy R. Leschke, Alan T. Sherman
    Abstract:

    We present Change-Link, a customizable data exploration tool which empowers the user to see visual representations of directories that have changed over time within a computer operating system that supports the Microsoft Volume Shadow Copy Service (VSS). Change-Link displays change information in a split-screen interface comprising an overview of directory change for the entire dataset and a detail view of change for individual directories. Input to Change-Link is an evidence hard drive containing an active file system and previous versions of the directory structure that were archived by the VSS. This approach to browsing change within a directory structure helps a Digital Forensic Examiner understand how a particular computer was used to support criminal activity. Because data that have changed are often the most important, identifying directories that have changed over time directs attention towards data of higher importance. By examining the most important data, Digital Forensic Examiners are better able to keep pace with the data explosion that is making current Digital Forensic examinations unmanageable. Our contributions include the development of a segmented box and whisker glyph for representing change over time for individual directories, an approach for aggregating VSS data for Digital Forensic examinations, and a data visualization tool for exploring Digital Forensic data.