Warning: Bitcoin network is highly vulnerable !

in #bitcoin7 years ago

During my studies in Crypto-currencies Reseach Center (CRC), we found that bitcoin network is highly vulnerable because the main nodes are hard-coded without any mechanism for identity checking. Also the topology can be changed logically with their internal (and unknown) policies by resolving desired peers in a partially controlled way.

140811_FUT_Bitcoin.jpg.CROP.promo-mediumlarge.jpg

You can find the codes here:
https://github.com/bitcoin/bitcoin/blob/master/src/chainparams.cpp#L143

There are six lines with dns seeds:

  • seed.bitcoin.sipa.be
  • dnsseed.bluematt.me
  • dnsseed.bitcoin.dashjr.org
  • seed.bitcoinstats.com
  • seed.bitcoin.jonasschnelli.ch
  • seed.btc.petertodd.org

There are lots of discussion in the forums targeting this issue:

Also the DNS addresses can be controlled by government and Internet providers by resolving fake nodes!

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Interesting, can you explain it to me as if I was a 5 year old?

Im not joking

Bitcoin is based on a peer-2-peer protocol. The initial peers are find based on a predefined rules in the code and they connect you to another peers.

Does it clear?