Encrypted VoIP Meets Traffic Analysis

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."

Re:Bleh

[batquux]

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

Re:Bleh

[zill]

A'LA'IH [xkcd.com]

Re:Bleh

[Chrisq]

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)

Re:Bleh

[ciderbrew]

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.