Prosecutors are looking at Binance's controls

Federal prosecutors in Manhattan, together with the US Justice Department's criminal division in Washington, are investigating activity on Binance connected to US sanctions on Iran. Bloomberg first reported the probe, and Reuters subsequently confirmed its existence through a source familiar with the matter.

Investigators are reportedly examining whether Binance knowingly allowed trading that should have been prevented under US sanctions rules. The authorities involved have not publicly described the full scope of the investigation, and the Justice Department has not announced new charges against Binance in connection with this probe.

A $61 million forfeiture case provides the immediate context

The investigation follows a separate civil action filed on September 14. The US Attorney's Office for the Southern District of New York is seeking forfeiture of roughly $61 million in cryptocurrency that it alleges came from black-market sales of Iranian crude oil and petroleum products.

The complaint alleges that two Chinese companies, Blessed Trust and Hexa Whale, used Binance trading accounts while moving proceeds linked to those sales. Those claims remain allegations. The Justice Department explicitly notes that a civil forfeiture complaint does not establish that the assets were criminal proceeds until a court enters judgment.

Binance disputes the broader compliance narrative

Binance says it has zero tolerance for sanctions violations and that it fully cooperates with law enforcement. The company says it remains committed to identifying and removing bad actors from its platform.

The dispute over Iran-related flows predates this week's investigation. In March 2026, Binance published detailed responses to earlier reporting about Blessed Trust and Hexa Whale. It said both entities were investigated following law-enforcement inquiries and later removed from the exchange. Binance also said that, to its knowledge, no Binance account had directly transacted with an Iran-based entity.

Binance's own analysis said that no more than about $126.1 million in the examined multi-hop flows ultimately reached wallets with links to Iran, including at most $24.1 million reaching wallets associated with the Islamic Revolutionary Guard Corps. Those figures are Binance's account of the transactions rather than an independent finding by prosecutors.

The historical context matters

The new investigation carries additional weight because Binance has already faced major US enforcement action. In 2023, the company pleaded guilty in a case involving anti-money-laundering obligations and sanctions violations and agreed to penalties exceeding $4 billion.

That history places unusual attention on what happened after the company said it had rebuilt its compliance operation. Any major exchange can be targeted by illicit actors, and the mere presence of suspicious funds does not by itself establish misconduct by the platform. The key question for prosecutors is whether Binance identified the relevant activity, how quickly it responded, and whether it knowingly allowed prohibited transactions to continue.

An investigation, not a conviction

The public record therefore supports a narrower conclusion than some of the more dramatic headlines suggest. Binance is under investigation, and US prosecutors have separately made detailed allegations about Iranian oil proceeds moving through accounts on the exchange. Whether Binance itself knowingly violated sanctions remains unresolved.

The case also illustrates how far crypto exchanges have moved into the territory traditionally occupied by banks and payment processors. Compliance systems, transaction monitoring and sanctions screening are no longer peripheral functions for a global exchange. They are now central infrastructure, and failures in those systems can become legal risks measured in billions of dollars.