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Encrypted VoIP Meets Traffic Analysis

Posted by CmdrTaco on from the i-only-speak-in-binary dept.

Der_Yak writes "Researchers from MIT, Google, UNC Chapel Hill, and Johns Hopkins published a recent paper that presents a method for detecting spoken phrases in encrypted VoIP traffic that has been encoded using variable bitrate codecs. They claim an average accuracy of 50% and as high as 90% for specific phrases."

4 of 98 comments (clear)

  1. Re:Bleh by batquux · · Score: 4, Funny

    Come on, 50% is better than most unencrypted voice recognition!

  2. Re:Bleh by zill · · Score: 4, Funny

    A'LA'IH

  3. Re:Bleh by Chrisq · · Score: 5, Funny

    Once they discover a method to wire trap encrypted video calls, that would open a new era in porn scene.

    ...

    I'm pretty sure that identifying a specific word with 50% accuracy is better than random chance. There are more than two words in the English language.

    Maybe he's talking about the porn film.90% seem to be "oh" or "yes" (or so i am told)

  4. Re:Bleh by ciderbrew · · Score: 4, Funny

    The pitch is the main thing in the art form.
    A low German voice - "ooohhh yaaaaa", over and over. then you have the high pitched Japanese squeak sound - "ii, ii, ii, kimochi". Which really gets annoying these days. It took a few years; but it IS annoying.