Mar 23, 2020 · Right now, there are five key issues facing blockchains and cryptocurrencies. They are security, privacy, regulatory, legal, and ethical. Here’s what you need to know. Blockchain Security Issues. A blockchain draws its security benefits from the decentralized nature of its nodes (i.e. the computers that verify transactions on the blockchain). Issues With Blockchain Security - Due Jan 29, 2018 · In looking at these issues, can you truly consider blockchain technology to be “safe” or “secure?” Or, are there still issues with blockchain security to assess? The system itself is fairly airtight, so long as it’s been executed properly, and has a decent network of users on the system. However, any system has some vulnerability, and