https://www.theguardian.com/business/2023/oct/27/sam-bankman-fried-testimony-ftx-cryptocurrency-trial > Bankman-Fried says his biggest mistake was not implementing a dedicated risk management team for crypto trading platform FTX > Sam Bankman-Fried admitted to making management mistakes while at the helm of FTX, his former multibillion-dollar cryptocurrency empire, during Friday testimony in his defense at trial.