Book Image

Securing Blockchain Networks like Ethereum and Hyperledger Fabric

By : Alessandro Parisi
Book Image

Securing Blockchain Networks like Ethereum and Hyperledger Fabric

By: Alessandro Parisi

Overview of this book

Blockchain adoption has extended from niche research to everyday usage. However, despite the blockchain revolution, one of the key challenges faced in blockchain development is maintaining security, and this book will demonstrate the techniques for doing this. You’ll start with blockchain basics and explore various blockchain attacks on user wallets, and denial of service and pool mining attacks. Next, you’ll learn cryptography concepts, consensus algorithms in blockchain security, and design principles while understanding and deploying security implementation guidelines. You’ll not only cover architectural considerations, but also work on system and network security and operational configurations for your Ethereum and Hyperledger Fabric network. You’ll later implement security at each level of blockchain app development, understanding how to secure various phases of a blockchain app using an example-based approach. You’ll gradually learn to securely implement and develop decentralized apps, and follow deployment best practices. Finally, you’ll explore the architectural components of Hyperledger Fabric, and how they can be configured to build secure private blockchain networks. By the end of this book, you’ll have learned blockchain security concepts and techniques that you can implement in real blockchain production environments.
Table of Contents (15 chapters)
Section 1: Blockchain Security Core Concepts
Section 2: Architecting Blockchain Security
Section 3: Securing Decentralized Apps and Smart Contracts
Section 4: Preserving Data Integrity and Privacy

Blockchain versus DLT

The time has come to clarify the distinction between blockchain (that is, the technology supporting Bitcoin) and the other technological implementations that are inspired by it but are different in many non-secondary aspects.

These technologies are usually referred to as DLT, precisely so as not to confuse them with blockchain. DLTs fall into the more general category of distributed databases, which consist of databases whose archives are replicated on multiple nodes.

It should be noted that not all distributed databases represent distributed ledgers, just as not all distributed ledgers constitute blockchains (we specifically use the term in lowercase to avoid confusion with Bitcoin's blockchain).

In distributed databases, in fact, the state of the archives is maintained consistently by the presence of an entity that plays the role of central authority...