Research Article
An Assessment of VoIP Covert Channel Threats
@INPROCEEDINGS{10.1109/SECCOM.2007.4550357, author={Takehiro Takahashi and Wenke Lee}, title={An Assessment of VoIP Covert Channel Threats}, proceedings={3rd International ICST Conference on Security and Privacy in Communication Networks}, publisher={IEEE}, proceedings_a={SECURECOMM}, year={2008}, month={6}, keywords={VoIP covert channel channel capacity covert communication security of data voice over IP watermarking}, doi={10.1109/SECCOM.2007.4550357} }- Takehiro Takahashi
Wenke Lee
Year: 2008
An Assessment of VoIP Covert Channel Threats
SECURECOMM
IEEE
DOI: 10.1109/SECCOM.2007.4550357
Abstract
A VoIP covert channel is a mechanism that utilizes an IP phone conversation to illicitly transfer information across a network. In this paper, we present a model of VoIP covert channels that explains their main components and functions. We provide a performance evaluation framework, and quantify the threat to users. Our results demonstrate that covert channels represent an immediate threat to VoIP users. We discuss possible course of actions to detect attacks and mitigate the risk of information leakage.
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