In the wake of the recent NSA / Prism debacle, there has been a large push for secure, encrypted communications for the average user. With this in mind, I decided to take a brief look at the GNU ZRTPCPP library. This blog post discusses several vulnerabilities that were uncovered in this initial audit. Note that these vulnerabilities can be triggered by un-authenticated, untrusted, remote parties, and affects the following software: SilentCircle, Silent Circle and other software.”]
Source: https://informationsecuritybuzz.com/news/attacking-crypto-phones-weaknesses-in-zrtpcpp/