Confidential Report Flags Bitfinex Security Lapses in Huge 2016 Hack

Bitfinex failed to implement operational, financial, and technological controls proposed by its digital security partner, according to a document obtained by reporters.

Hack was one of the largest bitcoin heists in history in August 2016, stealing 119,000 bitcoins worth $71 million.

Authorities have never tracked down the thief, although last year an American couple was arrested for laundering some of the stolen bitcoins.

Russian-American citizen Ilya Lichtenstein and his wife, Heather Morgan, were arrested last year for allegedly laundering the stolen bitcoins.

Investigators noted in an official Department of Justice document that Morgan used her real name to cash out some of the online purchases made with the stolen cryptocurrency.

Burner phones, SIM cards, and assorted electronics were found under the couple's bed in their New York apartment.