"....Software like that exists. One of the oldest is PGP, e-mail encryption software released in 1991. Others include OTR (for “off the record”), which enables

"....Software like that exists. One of the oldest is PGP, e-mail encryption software released in 1991. Others include OTR (for “off the record”), which enables secure instant messaging, and the Internet telephony apps Silent Circle and Redphone. https://news.ycombinator.com/item?id=5880596 https://news.ycombinator.com/item?id=5880596 http://www.washingtonpost.com/blogs/wonkblog/wp/2013/06/14/nsa-proof-encryption-exists-why-doesnt-anyone-use-it/?wprss=rss_ezra-klein http://www.washingtonpost.com/blogs/wonkblog/wp/2013/06/14/n...