Ilya Lichtenstein, the mastermind behind one of the largest cryptocurrency heists in history, has been sentenced to five years in a US prison for laundering nearly 120,000 stolen bitcoins. The hack, which targeted the Bitfinex exchange in 2016, resulted in the theft of approximately $70 million worth of bitcoin—an amount that surged to over $4.5 billion by the time Lichtenstein and his wife, Heather Morgan, were arrested in February 2022.

Lichtenstein, who pled guilty last year, and his wife Morgan, a self-proclaimed rapper under the alias “Razzlekhan,” employed sophisticated laundering techniques to conceal the stolen funds. The couple used fictitious identities, converted bitcoin into other cryptocurrencies, and even purchased gold coins to cover their tracks.

In an effort to evade detection, Lichtenstein traveled with couriers while on family trips, moving the illicit funds back to the United States. Meanwhile, Morgan’s “Razzlekhan” persona, which went viral on social media, depicted her as a “bad-ass money maker” with a flair for hip-hop, all while downplaying the couple’s involvement in the theft.

At the time of the hack, the stolen bitcoin was worth around $70 million, but its value skyrocketed to over $4.5 billion by the time authorities closed in on the couple. Today, the assets recovered in the case are valued at more than double that amount.

The seizure, totaling $3.6 billion in assets, marked the largest financial confiscation in the history of the U.S. Department of Justice, according to Deputy Attorney General Lisa Monaco. In court, District Judge Colleen Kollar-Kotelly emphasized the importance of holding perpetrators accountable, stating, “It’s important to send a message that you can’t commit these crimes with impunity.”

Lichtenstein, who has been incarcerated since his arrest, expressed remorse for his actions and hopes to apply his expertise to combat cybercrime in the future. Meanwhile, Morgan is scheduled to be sentenced on November 18th for her role in the conspiracy to launder the stolen bitcoin.

The case highlights the growing risks and complexities surrounding cryptocurrency theft and underscores the government’s commitment to curbing cybercrime in the digital age.