On of the pros of Bitcoin since its birth is that it’s a public ledger, anyone is allowed to send and receive payments and data on the Blockchain. However, Bitcoin’s network does not provide a way of encrypting communication between nodes, which allows manipulation of data, mass surveillance and analysis of its users.
Although encrypted communication is currently a possibility with VPNs, TOR or other mechanisms, it is not easy for the average user to setup such a connection. There is BIP draft called BIP151 that aims to add encrypted communication to Bitcoin’s network and which currently seems implemented only by Armory.
Jonas Schnelli presented an overhauled version for BIP 151 with some major changes: