A 17-year-old British student named Alexander Browder has been sanctioned by Russia after his investigation into a ruble-backed stablecoin network assisted UK officials in targeting entities accused of funneling money for Moscow’s war efforts. The teenager’s research centered on A7A5, a stablecoin pegged to the ruble, which was issued by Old Vector based in Kyrgyzstan and operated on the Tron and Ethereum blockchains. Browder’s findings were published on his Global Cryptocurrency Laundering Database website and contributed to a Henry Jackson Society report that analyzed 164 crypto laundering cases over two decades.
Browder, the son of Kremlin critic Sir Bill Browder, dedicated 18 months to studying A7A5 and later advised UK ministers before Britain announced new sanctions against groups linked to the network. In response, Russia added him to its “stop list” for spreading what Moscow calls false claims. The teen expressed that the Russian sanctions do not intimidate him and argued that the reaction proves his work struck a nerve. He noted on X that he might be the first high school student ever sanctioned by an authoritarian regime for uncovering corruption.
According to a UK Foreign Office statement from May 26, A7A5 was part of a scheme designed to circumvent Western sanctions, processing over $90 billion in transactions last year. Foreign Secretary Yvette Cooper stated that Britain aims to dismantle the infrastructure supporting Russia’s war economy. Browder’s research also estimated that rogue states like Iran and North Korea laundered roughly $350 billion in illicit funds, with about half potentially moving through the A7A5 network. Elliptic, a blockchain analytics firm, reported in January that A7A5 exceeded $100 billion in transactions during its first year.
Beyond A7A5, Western governments have intensified their crackdown on crypto services linked to Russia. In April, the European Union introduced its 20th sanctions package, targeting Russia-based crypto providers and stablecoins like A7A5 and RUBx. Reuters reported that Kyrgyzstan shut down 50 companies over sanctions evasion concerns, though their names were not publicly disclosed.
The Russian sanctions also targeted four other British citizens: Washington Post journalist Catherine Belton, CTG managing director Alice Mary Laugher, Chelsea Group founder Richard Nicolas Westbury, and The i Paper journalist Richard Holmes. Russia’s Foreign Ministry said the list will continue to expand in response to what it considers unfriendly actions by UK authorities. Browder told GB News that Moscow’s move could deter people from working with A7A5, but emphasized that the effectiveness depends on strong government enforcement.