Title	Analyzing Impacts of Software Diversity on Worm Propagation in Peer-to-Peer Networks
Author	Ying Zhou, Zhong-fu Wu, Feng Li, Hao Wang, Zheng-zhou Zhu
Citation	Vol. 6  No. 2  pp. 219~225
Keywords	Peer-to-Peer Network, Peer-to-Peer Worm, Software Diversity, Worm Propagation.

Title	Combining Multiple Techniques for Intrusion Detection
Author	Ronghua Yao, Qijun Zhao, Hongtao Lu
Citation	Vol. 6  No. 2  pp. 208~218
Keywords	intrusion detection system, combined detection model, fusion method.

Title	A Novel Watermark Algorithm for Integrity Protection of XML Documents
Author	Ronghua Yao, Qijun Zhao, Hongtao Lu
Citation	Vol. 6  No. 2  pp. 202~207
Keywords	Extensible Markup Language (XML), Integrity Protection, Watermark, Signature, Principal Component Analysis (PCA)

Title	Ridgelet-Based Robust and Perceptual Watermarking for Images
Author	Xiao Liang, Wei Zhihui, Wu Huizhong
Citation	Vol. 6  No. 2  pp. 194~201
Keywords	Information security, digital watermark, ridgelet transform, perceptual embedding, blindly detection