One of the interesting things about this is the work on DMTP/DMAP, which are "Dark Mail" protocols that have security built in from the ground up (developed by Zimmerman of PGP fame, some Silent Circle folks, and Ladar Levison of Lavabit). It's a pretty neat thing that I hope sees widespread adoption. Fixing email has proven very difficult, due to the incredible inertia of existing systems...but, at some point we really do need to move forward on secure email communication.

So, this is really cool stuff.