In a statement to TechCrunch about whether the shut down was only because Silent Circle felt email was insecure, CEO Michael Janke tells us
“It goes deeper than that. There are some very high profile people on Silent Circle- and I mean very targeted people- as well as heads of state, human rights groups, reporters, special operations units from many countries. We wanted to be proactive because we knew USG would come after us due to the sheer amount of people who use us- let alone the “highly targeted high profile people”. They are completely secure and clean on Silent Phone, Silent Text and Silent Eyes, but email is broken because govt can force us to turn over what we have. So to protect everyone and to drive them to use the other three peer to peer products- we made the decision to do this before men on [SIC] suits show up. Now- they are completely shut down- nothing they can get from us or try and force from us- we literally have nothing anywhere.”
http://techcrunch.com/2013/08/08/silent-circle-preemptively-...