دانلود کتاب بلاک چین برای امنیت سایبری و حریم خصوصی

Since the creation of the first application in cryptocurrency, which is the Bitcoin in 2009 by Satoshi Nakamoto, blockchain technology has been presented as a revolution impacting the industrial and economic worlds. Unlike most digital platforms, blockchain is a decentralized system that allows each participant with a regularly updated copy of the large register. There is no central server but a collaborative management, which is in principle a protection against falsifications and other attacks. This disintermediation must also be a factor in reducing costs. The system is also completely transparent. The register and, therefore, the transaction history can be consulted at any time by any Internet user (or by all members of the network). It is thus possible to ensure the full traceability of an asset or product that has been traded via a blockchain. A participant operates under a pseudonym, but all his operations are traceable. The blockchain is tamperproof and inviolable. Once recorded in the blocks, the information can no longer be changed or deleted. With this technology, the electronic document could have as much or more evidentiary value as the paper. The decentralized system, by multiplying the number of copies, also offers a guarantee against piracy. Blockchain technology has infiltrated all areas of our lives, from manufacturing to healthcare and beyond. Cybersecurity is an industry that has been significantly affected by this technology and maybe more so in the future. Blockchain technology can be used to prevent any data breach, identity theft, cyberattacks, or criminal acts in transactions. This ensures that data remains private and secure. Indeed, it could improve cyberdefense by being a platform for preventing fraudulent activities through consensus mechanisms. The blockchain could also detect data falsification through its underlying characteristics such as operational resilience, data encryption, auditability, transparency, and immutability. The key point that makes it possible to affirm that blockchain technology is an opportunity for cybersecurity is its infallibility. Indeed, while a centralized server allows porous entrances to be seen for the joy of the most experienced hackers, a distributed server is, on the contrary, an impassable wall. Unless you have almost infinite power, it is currently impossible to bring malware into it. In a few paragraphs, let us summarize the benefits that could bring the blockchain to cybersecurity. Thanks to the blockchain technology, companies would be able to authenticate devices and users without the need for a password. This would eliminate human intervention from the authentication process, preventing it from becoming a potential attack vector. The use of a centralized architecture and simple connections is the major weakness of conventional systems. No matter how much an organization invests in cybersecurity, all these efforts are in vain if employees and customers use passwords that are easy to steal or hack (the famous 123456). The blockchain would offer strong authentication and resolution of a single point of attack at the same time.