In 2010 I asked Professor Eben Moglen to speak to the Internet Society of New York about software freedom, privacy and security in the context of cloud computing and social media. In his Freedom in the Cloud talk, he proposed the FreedomBox as a solution: a small inexpensive computer which would provide secure encrypted communications in a decentralized way to defeat data mining and surveillance by governments and large corporations.
Via Peter Azzopardi
Homomorphic encryption allows data to be processed in an encrypted form so that only the end user can access it in a readable form. So far it has been too demanding for normal computers to handle.