YouSkyde: Information Hiding for Skype Video Traffic
This addresses the problem of secure, covert communication for users of Skype video calls, though it is an incremental improvement in steganographic techniques for specific traffic.
The authors tackled the problem of clandestine communication by developing YouSkyde, a new information hiding method for Skype video traffic that introduces intentional losses to embed data. The method achieved a steganographic bandwidth of 0.93 kbps with negligible distortions and high undetectability.
In this paper a new information hiding method for Skype videoconference calls - YouSkyde - is introduced. A Skype traffic analysis revealed that introducing intentional losses into the Skype video traffic stream to provide the means for clandestine communication is the most favourable solution. A YouSkyde proof-of-concept implementation was carried out and its experimental evaluation is presented. The results obtained prove that the proposed method is feasible and offer a steganographic bandwidth as high as 0.93 kbps, while introducing negligible distortions into transmission quality and providing high undetectability.