How to protect data in the blockchain: the Six principles of the security
The blockchain is touted as one of the safest technologies, which uses high level of encryption, almost completely protecting them against unauthorized and unfair changes. Despite this, security threats exist. They can be avoided if you adhere to the following principles.
1. Storing cryptographic checksums of the data
Instead of storing the original content in the blockchain, ideally, should follow the principle of mirrored data storage when the network is just a cryptographic checksum (or mirror image). In this case, the hash value of the source data meets these mirrored data.
2. Secure storage of cryptographic keys
Access is regulated by the blockchain using the private cryptographic key. Of course, they should be stored in a safe place and not to catch the eyes of fraudsters, and just outsiders. Save them in plain text files or use of unencrypted devices threaten security because attackers can obtain access to the keys through spyware. Do not do this if you value your data.
3. Settings protection against hacking blockchain by brute force and attacks 51%
The decentralization of the blockchain, which constantly told, is in doubt: a small number of large miners control most of the blockchain— networks of bitcoin and Ethereum, the most famous cryptocurrency. If a consortium of miners in any way will get enough computing power, they will be able to get the network under control with brute force and change the data stored therein. Although clearly reliable protection from such threats has not yet been developed, methods to prevent attacks 51% there. Is the transition from the more vulnerable of the consensus algorithm Proof— of— Work to Proof— of— Stake, increasing the number of required confirmations and other methods.
4. Quality assurance code blockchain network
Code block requires supervision by experts, and network scalability also worth checking before you trust her with any information. Poor code creates threats, which are easy to avoid if you spend time to test.
5. Check the credentials of the provider
To the extent that, as more and more third-party solutions are available for storing vehicles in smart contracts and wallets, increasing the risk of losses due to errors such suppliers. Check the reputation of the projects before using them in the blockchain.
6. Check the web certification
Last but not least: the blockchain— transactions will be much safer if you always check that the security certification and extension of the HTTPS in the address bar is spelled correctly. This is a very useful habit.
According to the materials BTCWires