
Federal prosecutors unsealed a 29-count indictment against crypto investor Benjamin Wiener, alleging $20M in losses across dozens of victims. Trial set for Sept. 2026.
Federal prosecutors in South Dakota unsealed a 29-count fraud indictment against crypto investor Benjamin Paul Wiener, 43, alleging he orchestrated a scheme that caused roughly $20 million in losses across dozens of victims in three states.
Wiener pleaded not guilty during his initial court appearance on July 10 and was released on bond pending trial. The indictment, returned by a federal grand jury in the District of South Dakota, charges wire fraud, money laundering, bank fraud, and aggravated identity theft.
Prosecutors said Wiener persuaded investors to hand over money and digital assets to companies he controlled through materially false statements. After those funds were depleted, the indictment alleges, he sought fresh investments to cover personal spending and repay earlier participants – a pattern that mirrors classic Ponzi structures.
The government also claims Wiener moved investor funds through financial institutions and cryptocurrency exchanges to hide their source, ownership, and movement. In a separate allegation, prosecutors accuse him of obtaining a $1 million line of credit from a Sioux Falls bank in April 2025 by submitting falsified documents and using another person's identifying information without authorization.
If convicted, Wiener faces up to 20 years in prison for each count of wire fraud and money laundering, up to 30 years for bank fraud, and a mandatory consecutive two-year sentence for aggravated identity theft. The government may also seek restitution. His trial is scheduled to begin Sept. 15, 2026.
The case fits a broader pattern. The FBI reported more than $11.36 billion in cryptocurrency-related losses during 2025, a 22% jump from the previous year, while total internet crime losses approached $21 billion. An FBI report published in April showed that investment fraud accounted for the largest share of crypto losses, with victims averaging more than $62,000 across 181,565 complaints.
Federal investigators have also seized more than $25 million in cryptocurrency through five investigations into international fraud schemes linked to thousands of victims, illustrating how law enforcement traces funds across blockchain records, exchange accounts, and traditional bank wires.
The FBI's cryptocurrency investment fraud guidance advises investors to independently verify companies, investment professionals, custody arrangements, and withdrawal policies before sending funds. The agency also urges victims to preserve transaction records and communications and report suspected fraud to the Internet Crime Complaint Center as quickly as possible.
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