See https://github.com/bitcoin/bips/blob/master/bip-0150.mediawiki and
https://github.com/bitcoin/bips/blob/master/bip-0151.mediawiki

On Tue, May 9, 2017 at 12:09 PM, Raystonn . via bitcoin-dev <
bitcoin-dev@lists.linuxfoundation.org> wrote:

> This study was released last week, detailing some attacks at the network
> layer: https://btc-hijack.ethz.ch/files/btc_hijack.pdf.  Of the
> countermeasures discussed in the paper, the use of encryption
> to secure communications between nodes looks like low hanging fruit.
>
>
> Raystonn
>
>
>
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