I really enjoyed this Radiolab episode on all of the security measures behind the Zcash key signing ceremony. Stick around for the bonus security and privacy dilemma when the reporter covering the event discovers their phone is hacked mid-ceremony: https://www.wnycstudios.org/podcasts/radiolab/articles/ceremony
In particular I appreciated the discussion on the responsibility everyone has not just for their own #privacy, but the privacy of everyone else they connect with. When you give up your privacy to an app, you are also selling out your friends, family and colleagues.
