Security and privacy issues of blockchain technology

Blockchain technology is currently one of the most popular topics in the field of information technology. Blockchain is often associated with cryptocurrency or electronic cash, but it can also be extended to any interconnected information blocks. Now blockchain finds application in areas such as financial transactions, user identification, or the creation of cybersecurity technologies. So, in this framework we shall talk about that despite the fact that blockchain technology is reliable and supportive, the security issues and challenges of this technology cannot be left out especially when it comes to building personal privacy protection.