Currently, quantum computing is not yet at the stage that would allow for a real impact on cryptocurrencies or blockchains. It is possible that this could change within the next 3-5 years, as quantum computing breakthroughs create machines with greater processing capabilities. There are some quantum-proof algorithms, but they are not widely in use, as they are inefficient and are hard to send over long distances. Current security algorithms are based on problems that will be easily solved by quantum computers. As a result, security for a number of industries, including phones, bank accounts, browsers, crypto tokens, and more will have to change.