
In short, cryptocurrencies such as Bitcoin or Ethereum are digital or virtual currencies that use cryptography for security and operate on decentralized networks. These networks are normally based on a digital ledger technology, the so-called blockchain. Unlike traditional currencies (fiat money) which are issued by governments, cryptocurrencies have so far been launched by corporations or people. They are typically decentralized and rely on peer-to-peer networks for transactions and their validation. This mechanism helps make them resistant to fraud, central control, or interference. Despite these protection mechanisms, investors have witnessed that not all cryptocurrencies were resistant against fraud in the past.