Hackers transferred roughly $12M from wallets connected to the Bitfinex breach, in which 120,000 Bitcoin was stolen in August 2016.
Source: https://cointelegraph.com/news/four-year-anniversary-of-bitfinex-hack-and-12m-of-stolen-btc-moved
Four-Year Anniversary of Bitfinex Hack, and $12M of Stolen BTC Moved
August 4, 2020
CoinTelegraph