Blockchain Mock Interview

Master 26 Blockchain interview questions covering consensus algorithms, smart contracts, and cryptography.

WRITTEN BY WILLIAM SWANSEN
QUESTION 23 OF 26

How is your transaction data kept safe in a blockchain?

Besides being decentralized and inherently difficult to manipulate, the other feature of a blockchain is that it is highly secure. As a blockchain professional, you should be able to discuss the security features of blockchains and currencies based on blockchains provide.

"Transaction data within a blockchain is kept secure in several different ways. Since each block within the chain is connected to other blocks within the blockchain, it is difficult for hackers to manipulate the data without impacting the adjacent blocks. Another feature is that the blockchain is widely distributed among many different nodes. Changing the transaction data in a single node will be detected by the other nodes. Additionally, blockchains use encryption to protect data that is transmitted between users. Taken together, the security measures ensure that blockchain transactions are secure and can be trusted."

William Swansen
26 QUESTIONS & ANSWERS · BLOCKCHAIN
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