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LACK - A VoIP Steganographic Method

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Executive Summary

The paper presents a new steganographic method called LACK (Lost Audio PaCKets Steganography) which is intended mainly for VoIP. The method is presented in a broader context of network steganography and of VoIP steganography in particular. The analytical results presented in the paper concern the influence of LACK's hidden data insertion procedure on the method's impact on quality of voice transmission and its resistance to steganalysis. Communication network steganography is a method of hiding secret data in users' normal data transmissions, ideally, so it cannot be detected by third parties.

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