Analysis

What to do When Under Investigation For Crypto Fraud Defense

July 2026 · 6 min read · John D. Kirby, Former Federal Prosecutor

Upon learning that you are under federal investigation related to cryptocurrency fraud defense, digital asset prosecutions, security vs commodity classification, unlicensed money transmission, blockchain forensics, and DeFi regulation, it is crucial to act swiftly and strategically. Investigations typically begin with preliminary inquiries by the FBI or IRS into suspicious activity reports (SARs) filed by financial institutions. This may involve the SEC for issues surrounding securities law violations.

The involvement of federal agencies such as the Federal Bureau of Investigation (FBI), Internal Revenue Service Criminal Investigation Division (IRS-CI), and Securities and Exchange Commission (SEC) underscores the complexity and severity of these cases. These agencies employ sophisticated forensic techniques to trace digital assets through blockchain technology, making it imperative to understand your rights and obligations from the outset.

In the critical first 48 hours following an indication that you are under investigation, several steps should be taken immediately:

Seek Legal Counsel

Hiring a skilled federal criminal defense attorney is paramount. Early counsel can help navigate the complexities of digital asset laws and regulations, ensuring your rights are protected from the outset. Your lawyer will advise on how to respond to any initial inquiries or subpoenas without compromising your legal position.

Preserve Documents

Maintaining a comprehensive record of all relevant documents is crucial. This includes transaction records, emails, chat logs, and any other communications related to the digital assets in question. It’s important not to delete or alter these documents as doing so could be construed as obstruction of justice.

Do Not Make Statements

Avoid making any statements to law enforcement without your attorney present. Silence is golden when under investigation, as anything you say can and will be used against you in the course of an inquiry or subsequent prosecution. Let your legal representation handle all communications with federal agencies.

Understand Legal Frameworks

The classification of digital assets as securities versus commodities has significant implications for regulatory compliance. Similarly, engaging in money transmission without a license carries substantial penalties under federal law. Familiarize yourself with these nuances to better understand the scope and potential consequences of an investigation.

Conclusion

Navigating a federal investigation related to cryptocurrency fraud defense requires a proactive approach guided by legal expertise. Early engagement with counsel, preservation of relevant documentation, and adherence to regulatory guidelines are key steps in safeguarding your interests during such complex inquiries.

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