This article was published in French on February 28th, 2021: https://www.cointribune.com/actualites/les-plus-grands-scams-de-lecosysteme-crypto-en-2020/ Although cryptocurrencies are revolutionizing traditional financial systems, they are also used for scams such as Ponzi schemes, ransomware and high-yield investments. Take the well-known example of PlusToken. This Ponzi pyramid allowed its creators to steal several billion in crypto