Securing the Blockchain

The security of Blockchains is typically achieved by having the risks or costs associated with a malicious act far outweigh any likely benefit from its successful execution. Specifically, they seek to make the costs associated with being caught very large and the likelihood of success very low. Protocols such as Proof-of-Stake (POS) are more appropriate in the Blockchains envisaged for most supply-chain applications. Private and semi-private Blockchains are formed by groups of businesses, each of whom has a legitimate interest in protecting the validity of the data being handled. POS protocols allow honest actors to keep attackers at bay by making an attack economically unviable at a very low cost to the honest actors.