Cryptocurrency Investments: Pig-Butchering Scams Net More Than $75 Billion, Study Finds
Pig-butchering scammers have likely stolen more than $75 billion from victims around the world, far more than previously estimated, according to a new study.
John Griffin, a finance professor at the University of Texas at Austin, and graduate student Kevin Mei gathered crypto addresses from more than 4,000 victims of the fraud, which has exploded in popularity since the pandemic. With blockchain tracing tools, they tracked the flow of funds from victims to scammers, who are largely based in Southeast Asia.
Over four years, from January 2020 to February 2024, the criminal networks moved more than $75 billion to crypto exchanges, said Griffin, who has written about fraud in financial markets. Some of the total could represent proceeds from other criminal activities, he said.
“These are large criminal organized networks, and they're operating largely unscathed,” Griffin said in an interview.
The study, “How Do Crypto Flows Finance Slavery? The Economics of Pig Butchering,” was released on Thursday. Griffin and Mei found that $15 billion had come from five exchanges, including Coinbase, typically used by victims in Western countries. The study said that once the scammers collected funds, they most often converted them into Tether, a popular stablecoin. Of the addresses touched by the criminals, 84% of the transaction volume was in Tether.
“In the old days, it would be extremely difficult to move that much cash through the financial system,” Griffin said. “You'd have to go through banks and follow ‘know-your-customer' procedures. Or you'd have to put cash in bags.”
Paolo Ardoino, the chief executive officer of Tether, called the report false and misleading. “With Tether, every action is online, every action is traceable, every asset can be seized and every criminal can be caught,” Ardoino said in a statement. “We work with law enforcement to do exactly that.”
Tether has cooperated with authorities in some cases to freeze accounts tied to fraud. But often by the time the crime
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