Synopsis: Tether froze $4.2B in USDT tokens linked to crime over 3 years, aiding 310+ law agencies in 64 countries against scams, trafficking, and sanctions evasion. Power raises centralization concerns amid soaring illicit crypto flows.
The world’s largest stablecoin issuer has quietly become one of crypto’s most powerful crime-fighting tools.
Billions of dollars in digital currency have vanished not through hacking, but through a deliberate block. Tether, the issuer behind the world’s most-used stablecoin, has frozen roughly $4.2 billion worth of its USDT tokens over the past three years. The funds were all linked to suspected criminal activity. Law enforcement agencies worldwide are now leaning on stablecoin issuers like Tether to help stop financial crime in its tracks.
Tether revealed the figures to Reuters on Friday. The El Salvador-based company said most of the blocked funds were restricted since 2023. That timeline aligns with growing pressure from regulators and law enforcement to crack down on crypto-related fraud and sanctions evasion.
Tether Steps Up as a Crime-Fighting Partner
Tether works with more than 310 law enforcement agencies across 64 countries. Moreover, it holds a unique technical power it can remotely freeze USDT tokens in any wallet simply by blacklisting a blockchain address. Unlike Bitcoin or Ethereum, USDT operates through Tether’s centralized backend system, which gives the company direct control over funds.
This week, Tether assisted the U.S. Department of Justice in seizing nearly $61 million in USDT. The funds were tied to “pig-butchering” scams. In these schemes, criminals build fake relationships with victims online. They then persuade victims to invest in fraudulent platforms. The losses to individuals are often devastating.
Additionally, earlier this month, Tether froze approximately $544 million at the request of Turkish authorities. That money was linked to an illegal online betting and money-laundering operation run by Veysel Şahin. The freeze highlights the growing speed and scale of Tether’s interventions.
A Three-Year Record of Blocked Billions
Of the total $4.2 billion frozen, $3.5 billion was blocked since 2023 alone. Overall, Tether has blacklisted more than 6,800 wallets. Users who own those wallets can no longer access or move their funds. The list of targeted activity is broad scams, human trafficking, terrorism financing, sanctions evasion, and even warfare-related transactions in regions like Israel and Ukraine.
Furthermore, Tether has blocked funds tied to the sanctioned Russian crypto exchange Garantex. Most recently, Tether blacklisted an $83 million wallet on the TRON blockchain linked to suspicious exchange activity. An additional $20 million in a connected upstream wallet was also rendered unusable as a result.
Blockchain analytics firm Elliptic reported that by late 2025, Tether and fellow stablecoin issuer Circle had together blacklisted around 5,700 wallets. Those wallets held about $2.5 billion in frozen assets. Roughly three-quarters of the addresses contained USDT when authorities froze them.
Crypto Crime Is Soaring and Stablecoins Are at the Center
The scale of illicit crypto flows is alarming. Blockchain analytics firms estimate that money launderers received at least $82 billion in cryptocurrency in 2025 alone. That number surged from just $10 billion in 2020. Much of the criminal activity involves Chinese-speaking organized crime groups.
Stablecoins account for about 84% of all illicit crypto flows. In 2025, that equated to roughly $129 billion in criminal transactions. As a result, regulators have taken notice. The Financial Action Task Force (FATF) urged stronger controls last year to address risks in less-regulated crypto markets.
Consequently, authorities are increasingly relying on stablecoin issuers to act as first responders. Traditional banking systems have more built-in safeguards against fraud. Crypto platforms, however, often lack those protections. That gap has pushed law enforcement to lean on companies like Tether instead.
Also Read: Digital Gold Must Prove Its Origins to Win Institutional Trust. Here’s Why
Power to Freeze Raises Questions About Control
Tether’s ability to freeze funds has drawn both praise and criticism. On one hand, it helps governments combat crime quickly and effectively. On the other, it reveals just how centralized USDT really is. Some analysts warn users not to rely on USDT as a censorship-resistant asset, urging them to diversify their stablecoin holdings.
Meanwhile, proposed U.S. legislation called the GENIUS Act has drawn fire from New York’s top prosecutors, including Attorney General Letitia James. Critics argue the bill allows stablecoin issuers to freeze funds indefinitely while earning 4–5% yield on the underlying assets often U.S. Treasury bonds. At the same time, it places no obligation on issuers to return those frozen funds to victims.
USDt is also facing a shrinking supply. Circulating supply fell about $1.5 billion in February, following a $1.2 billion drop in January. Tether says these figures reflect short-term distribution shifts not weakening demand. The company noted that USDC saw similar declines during the same period.
Still, USDT remains the largest stablecoin in circulation, with more than $180 billion outstanding. That is up sharply from about $70 billion three years ago. As crypto markets mature, the role of stablecoin issuers in fighting financial crime is only expected to grow.
Written By Fazal Ul Vahab C H
