دانلود کتاب امنیت بلاکچین – جلوگیری از حملات به رمزارزها، برنامه های غیرمتمرکز، NFT و قراردادهای هوشمند

Blockchain is a new and exciting technology that provides alternative ways of accomplishing common goals. Blockchains make it possible to maintain distributed, decentralized, and immutable digital ledgers. The contents of these ledgers are also designed to be publicly visible, enabling anyone in the blockchain network to independently verify the legitimacy of the data and transactions that the ledgers contain. However, blockchain technology is also complex. Even the original, basic blockchains like Bitcoin are multilayered systems that use an array of algorithms to ensure the validity and immutability of the distributed ledger. Smart contract platforms go even further, allowing programs to run on top of the distributed ledger. Before diving into blockchain security and how these systems can be attacked, an understanding of some fundamentals is necessary. This chapter starts with a discussion of the goals of the blockchain and how it works at a high level. In the second half, I’ll break down the blockchain ecosystem into more manageable chunks and discuss threat modeling for the blockchain.