It was recently revealed by the CEO of Bitfinex, Paolo Ardoino that there was an attempt to exploit their system using a feature of the XRP Ledger network. The hackers' attempt to move nearly $15 billion in XRP ( half of XRP’s total value) was noticed. However, the attempt was unsuccessful and the actual transaction was just a few cents of XRP, the attempt failed because the sender didn't have enough money to carry out the transactions. The aim was likely to trick Bitfinex into thinking the transfer was real, which could lead to a hack. Bitfinex's system recognized the transfer as a "partial payment," a feature in XRP Ledger where payments can be reduced.