Security is a very important issue in the modern, highly technological environment. People use phones, tablets, laptops and other devices to store their private data. Whenever they use those devices to connect to the Internet, they open a gateway for potential hackers to gain unauthorized access to that data. This leads to a constant struggle between the ever more sophisticated security and hacking practices. The issue of security is even more important in the industry of Blockchain. Given the lack, or, in some cases, absence of legal regulation in the markets of Bitcoin and other cryptocurrencies, hackers are often able to get away with stealing users' crypto tokens - security measures being the only thing preventing them from doing so.