Key Highlights
- Federal prosecutors indicted South Dakota crypto investor Benjamin Paul Wiener on 29 criminal counts.
- Authorities allege Wiener orchestrated a $20 million crypto investment fraud affecting dozens of victims.
- The indictment includes wire fraud, money laundering, bank fraud, and aggravated identity theft charges.
The U.S. Department of Justice (DOJ) has indicted a South Dakota cryptocurrency investor accused of operating a $20 million investment fraud scheme.
According to an official DOJ release, Benjamin Paul Wiener, aged 43, faces 29 federal charges, including wire fraud, money laundering, bank fraud, and aggravated identity theft. Federal prosecutors allege Wiener persuaded investors to place money into several cryptocurrency-focused investment companies by making false promises and misleading representations about investment opportunities.
Wiener appeared before U.S. Magistrate Judge Veronica L. Duffy on July 10, where he pleaded not guilty to all charges.
How prosecutors say the scheme worked
According to the release, Wiener obtained money from investors before allegedly transferring those funds through multiple financial institutions and cryptocurrency exchanges in an effort to disguise their source and ownership. The DOJ alleges the transactions were intended to conceal fraud proceeds while allowing Wiener to spend investor money on personal expenses.
Prosecutors further allege the operation functioned similarly to a Ponzi-style scheme, where new investor deposits were allegedly used to repay earlier investors once available funds had been exhausted. The government estimates total investor losses at approximately $20 million, impacting dozens of victims across South Dakota, Minnesota, and neighboring states.
According to the indictment, Wiener allegedly used eight entities, including several LLCs, to solicit investor funds and move money through the fraudulent scheme.
A separate $1M fraud allegation
Beyond the investment fraud allegations, prosecutors also accuse Wiener of fraudulently obtaining a $1 million line of credit from a Sioux Falls financial institution in April 2025. According to the DOJ, Wiener allegedly submitted falsified financial documents and correspondence while using another individual’s personal identifying information without authorization.
Those allegations form the basis of the bank fraud and aggravated identity theft charges included in the indictment.
DOJ’s broader crypto crime crackdown
The Wiener case adds to a growing list of cryptocurrency-related prosecutions pursued by the Justice Department this year.
In May, federal prosecutors indicted three Tennessee residents accused of carrying out a $6.5 million armed crypto robbery in California. According to prosecutors, the suspects allegedly disguised themselves as delivery workers before using firearms, duct tape, and forced wallet access to steal digital assets from victims.
One month later, the DOJ also dismantled an alleged Chinese intelligence operation that used AI-generated identities, freelance hiring platforms, fake consulting firms, and cryptocurrency payments to recruit U.S. government employees and military personnel. Authorities seized 13 internet domains allegedly linked to the espionage network.
The latest indictment highlights how federal investigators are increasingly focusing on cryptocurrency-related fraud, money laundering, cyber-enabled financial crime, and the misuse of digital assets across multiple types of criminal investigations.
What happens next
The investigation is being led by IRS Criminal Investigation (IRS-CI), the Federal Bureau of Investigation (FBI), and the U.S. Attorney’s Office for the District of South Dakota.
If convicted, Wiener faces up to 20 years in prison on the wire fraud and money laundering charges, up to 30 years for bank fraud, and a mandatory consecutive two-year sentence for aggravated identity theft.
As with all criminal indictments, the charges remain allegations, and Wiener is presumed innocent unless proven guilty in court. His trial is currently scheduled to begin on September 15, 2026.
Also Read: India’s ED Finds Seed Phrases, Seizes ₹3.35 Cr Crypto in 19-Raid Crackdown
