Attacks on blockchain

The blockchain network is generally to be considered as secure and scalable but their security level is directly proportional to the amount of hash computing power that supports the blockchain. As the miners increase in the mining process the more difficult for an attacker to attack the blockchain. Several ways a blockchain can be attacked. Performing these attacks such as Finney attack, race attack, 51% attack, eclipse attack, Sybil attack, DDoS, routing attack, DAO attack, parity multisig parity attack on a blockchain becomes more difficult as more computing power is added to the network. The attacks described in this chapter are not endemic to blockchains except 51% attack and there are many measures and solutions to mitigate the risk of these attacks. [GRAPHICS] .