New recent study at <b>(Johns Hopkins / UNC)</b> says it can <b>Uncover spoken phrases in *encrypted* VoIP conversations<br></b>
<br>
<b>(Johns Hopkins / UNC) ACM paper</b><br>
<br>
     We evaluate our techniques on a standard speech recognition corpus<br>
     containing over 2,000 phonetically rich phrases spoken by 630<br>
     distinct speakers from across the continental United States. Our<br>
     results indicate that we can identify phrases within encrypted calls<br>
     with an average accuracy of 50%, and with accuracy greater than 90%<br>
     for some phrases. Clearly, such an attack calls into question the<br>
     efficacy of current VoIP encryption standards.<br>