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Hiding Secret Messages In Skype Silences

Orome1 writes "A group of researchers from the Institute of Telecommunications of the Warsaw University of Technology have devised a way to send and receive messages hidden in the data packets used to represent silences during a Skype call. After learning that Skype transmits voice data in 130-byte packets and the silences in 70-byte packets, the researchers came upon the idea of using the latter to conceal the sending and receiving of additional messages."

2 of 79 comments (clear)

  1. Move Along by Anonymous Coward · · Score: 5, Funny

    Nothing to see hear.

  2. Re:Eloquent silence by Minwee · · Score: 5, Insightful

    Exactly what I was thinking.

    You would think that a packet specifying X seconds of simulated silence could be packed into a few bits, so maybe two bytes should suffice.

    Were you planning on sending that "two seconds of silence" packet at the _start_ of the pause? If so I know a few theoretical physicists and at least one state lottery commission who would _love_ to see your algorithm.