A recent trial involving two brothers from the Massachusetts Institute of Technology (MIT) has ended in a mistrial after jurors failed to reach a consensus on charges related to a sophisticated cryptocurrency theft scheme. U.S. District Judge Jessica Clarke made the decision to send jurors home when it became clear they could not agree on whether to convict or acquit Anton Peraire-Bueno and James Peraire-Bueno.
The case presented by prosecutors centered around an alleged wire fraud and money laundering operation that sought to steal a staggering $25 million worth of cryptocurrency in just 12 seconds, exploiting vulnerabilities in the Ethereum blockchain’s integrity. The brothers, both educated in computer science at MIT, were indicted in May 2024, prior to a shift in federal enforcement policies under the Trump administration that became more favorable toward cryptocurrency.
Assistant U.S. Attorney Ryan Nees outlined the prosecution’s case, describing the brothers’ actions as a “high-speed bait-and-switch” scheme intended to deceive trading bots and drain the accounts of other cryptocurrency traders. Over a period of months, they allegedly plotted to manipulate the protocols that validate transactions on the Ethereum blockchain, a decentralized public ledger that records all cryptocurrency transactions.
The prosecution claimed that the brothers exploited a weakness in the code of MEV-boost, software used by Ethereum validators responsible for confirming the validity of new transactions. Nees explained to the jury how the brothers executed a complex trading strategy that appeared legitimate on the surface but was, in fact, a carefully orchestrated trap designed to ensnare victims.
In contrast, defense attorney Katherine Trefz, representing James Peraire-Bueno, argued that their trading tactics were not only innovative but also legitimate within the context of a competitive trading environment. She maintained that the strategy adhered to the principles of the cryptocurrency marketplace, implying that the brothers acted ethically within the existing framework.
As the case concludes in mistrial, it leaves open the possibility of retrial or further plea negotiations, illustrating the complexities surrounding legal interpretations of rapidly evolving cryptocurrency practices. The outcome remains uncertain, with the future of the case hanging in the balance as both sides consider their next steps.

