content: Hmm, the techcrunch article didn't mention this. I'm not sure how much of the app is open vs closed source.  “Our goal with this update was to achieve privacy without complexity,” said Duric. “We used state-of-the-art, open source encryption that is always on, for all conversations. We believe Wire is unique in the industry with always-on encryption for all conversation content, in groups or one-on-one, with simultaneous support for multiple devices.”  http://venturebeat.com/2016/03/10/wire-the-messaging-app-backed-by-skypes-janus-friis-gets-video-calls-and-message-encryption/