@inproceedings{88b2ad5544ff410fa947bf04e9a05b8f,
title = "Detection of word shift steganography in PDF document",
abstract = "Word shift is a fundamental format based text steganogra-phy. It embeds secret information in text by shifting words slightly. Compared with study on steganography, research on its steganalysis is still in its infancy. In this paper, we present a blind steganalysis method to detect word shift in PDF document. Our method is to find features sensitive to word shift and use classifier to learn and remember feature differences between natural document and stego one. In order to design sensitive features, we propose two concepts {"}neighbor difference{"} and {"}environment equal{"}, which reveal the spaces' statistical property. Then, we divided the PDF document into two types to make our method work efficiently. At last, we design a series of experiments to demonstrate performance of our method. The detection accuracy of our method can be up to 93.3\%. Our initial results shows that our proposed concepts are very useful in text steganal-ysis and offer help for other related works.",
keywords = "Information hiding, PDF, Steganalysis, Text steganography, Word shift",
author = "Li Lingjun and Huang Liusheng and Yang Wei and Zhao Xinxin and Yu Zhenshan and Chen Zhili",
year = "2008",
doi = "10.1145/1460877.1460897",
language = "英语",
isbn = "9781605582412",
series = "Proceedings of the 4th International Conference on Security and Privacy in Communication Networks, SecureComm'08",
booktitle = "Proceedings of the 4th International Conference on Security and Privacy in Communication Networks, SecureComm'08",
note = "4th International Conference on Security and Privacy in Communication Networks, SecureComm'08 ; Conference date: 22-09-2008 Through 25-09-2008",
}