How a former crypto user’s archived Binance data ended up in a foreign terrorism prosecution

When Russian investigators detained IT specialist Yuri Belenkiy in September 2025, Binance had been formally out of Russia for almost two years. Its customer records, however, were still available.

Law enforcement documents reviewed by Reuters show that Binance supplied personal and transaction data later incorporated into a Russian terrorism-financing case against Belenkiy.

The 49-year-old Russian passport holder, who also has a Bulgarian residence permit, is accused of sending more than $700 in crypto to Ukrainian recipients between January 2023 and March 2024. Russian authorities say the payments supported a group linked to the Azov military unit, which Moscow designates as a terrorist organization.

Belenkiy is in a Russian jail awaiting trial, and the allegations have not been adjudicated.

The case exposes a hard limit to what an exchange exit means for its former customers. A company can sell its local operation, stop onboarding users, and remove its staff. It may still retain years of passports, addresses, and account histories because financial law requires recordkeeping. Those files are available and accessible long after the commercial relationship that created them ends.

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