The Bangladesh hack would have been much worse if the Fed hadn't been custodian of much of the money: "The Federal Reserve Bank of New York blocked the remaining thirty transactions, amounting to US$850 million, due to suspicions raised by a misspelled instruction" and much of the other money was recovered: "All the money transferred to Sri Lanka has since been recovered. However, as of 2018 only around US$18 million of the US$81 million transferred to the Philippines has been recovered"

Yeah, I wouldn't want to rely on the Federal Reserve Bank noticing a misspelled instruction before my billion dollars were released, but at least there's someone with a brain looking at the transfer before it happens!