Binance Handed Russian Investigators Personal Data on Client Accused of Funding Ukrainian Forces

Binance gave Russian law enforcement transaction records and identity documents belonging to Yuri Belenkiy, an IT specialist now facing terrorism financing charges in Russia. He’s been detained since September 2025. No trial date has been set.

The data Binance handed over wasn’t minor. According to law enforcement documents reviewed in the reporting, Russian investigators got Belenkiy’s full transaction history tied to transfers he allegedly made between January 2023 and March 2024. The amounts weren’t huge — over $700 in cryptocurrency, sent to the Ukrainian military and to an organization Russia calls a proscribed group: the Azov Brigade, also known as the Azov Regiment. But the Russian state treated those transfers as terrorism financing. And Binance’s records, it seems, became central to building that case. Beyond transaction data, the exchange also provided Belenkiy’s date of birth, home address, phone number, and passport details — copies of both his Russian passport and his Bulgarian residency permit.

That’s a lot of personal data.

What Binance Actually Said

A Binance spokesperson didn’t comment on the specifics of Belenkiy’s case. The company’s position, per its spokesperson, is that Binance cooperates with legitimate information requests from law enforcement globally while adhering to legal and privacy requirements. That’s pretty much the standard line from any major financial institution — banks say the same thing. But the context here is different. Russia’s definition of “terrorism” in this case covers sending money to a military force that many Western governments actively support. So the legal obligation Binance cited is doing a lot of heavy lifting.

Binance sold its Russian business to CommEX back in September 2023, framing it as a clean exit from a complicated market. The sale was widely read as a response to mounting regulatory pressure and international scrutiny over the exchange’s exposure to sanctioned jurisdictions. But selling a local entity doesn’t erase the data that already passed through the platform’s hands. The Belenkiy case makes that pretty clear.

It’s worth pausing on the timeline. Belenkiy’s alleged transfers happened between January 2023 and March 2024. Binance’s exit from Russia closed in September 2023. So some of those transactions occurred after the sale to CommEX was announced or completed, which raises questions about exactly when the data requests came in and what obligations Binance felt it still carried toward Russian authorities after the divestiture. The company hasn’t addressed that publicly.

The Broader Data Privacy Problem

Crypto exchanges sit in an awkward spot. They collect enormous amounts of user data — KYC verification requires it — and they operate across dozens of jurisdictions, each with its own rules about when and how governments can demand that data. Most of the time, that tension stays theoretical. But cases like Belenkiy’s make it concrete and uncomfortable.

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The Azov Regiment is designated as a terrorist organization under Russian law. It is not designated as such by the United States, the European Union, or most Western governments, which have provided direct military and financial support to Ukraine. So when Binance cooperated with Russian investigators building a case around transfers to Azov, it was effectively helping a government prosecute activity that other governments consider lawful — or even commendable. That’s not a legal opinion, just the reality of operating in a world where the same act means entirely different things depending on who’s asking.

Binance’s stated policy — comply with lawful requests — doesn’t resolve that. Lawful where? Per whose law? The exchange hasn’t said whether it applies any additional review to requests from jurisdictions with poor human rights records or from governments actively at war with a neighboring country.

And Belenkiy is still waiting. No trial date, no resolution. The information Binance provided is sitting inside a Russian criminal case, and it’s unclear how heavily it will weigh in the eventual proceedings. The details of how prosecutors plan to use the transaction records in court haven’t been made public.

Broader industry concerns aren’t going away either. Crypto platforms have spent years arguing that blockchain transparency makes them more accountable than traditional finance. But that transparency cuts both ways — it can also make it easier for any government, regardless of its record, to trace and prosecute users once an exchange hands over the linking data that connects a wallet to a real identity.

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The Belenkiy case probably won’t be the last time a crypto exchange finds itself caught between competing legal systems, each claiming legitimacy, each demanding compliance. Exchanges have mostly handled these situations quietly, citing legal constraints on discussing individual cases. Binance is doing the same here.

Belenkiy remains detained in Russia, awaiting a trial with no scheduled date, with his passport details and transaction history already in investigators’ hands.