Tether-linked enforcement efforts have frozen more than $450 million in USDT since September 2024, according to disclosures from the T3 Financial Crime Unit. The largest single action came in April 2026, when $344 million USDT was frozen on the TRON network. The scale of those freezes has pushed stablecoin control back into focus.
T3 says digital asset freezes can begin within 24 hours
The unit said it works closely with law enforcement across five continents, including agencies in the US, Spain, Germany, the Netherlands, and Bulgaria. T3 said it can start a freeze within 24 hours of a request, a pace it described as faster than traditional financial institutions. It also reported a 43.9% increase in recovered assets tied to illegal activity in 2025 compared with the previous year.
Among the cited cases, about 26.4 million USDT believed to be connected to a Europe-based money laundering ring was frozen with Spain’s Guardia Civil in early 2025. In another case, called Operation Lusocoin, Brazil’s Federal Police traced and immobilized 4.3 million USDT linked to a criminal syndicate.
Frozen wallets include North Korea-linked actors and Bybit hack funds
The disclosed actions also cover wallets tied to North Korean cybercrime groups and nearly $9 million associated with the Bybit exchange hack. At the start of 2025, the Financial Action Task Force, or FATF, praised the T3 Financial Crime Unit and described it as an essential resource for global law enforcement, while also highlighting TRM Labs’ Beacon Network as a notable public-private cooperation model.
TRM Labs said blockchain-based criminal activity reached $158 billion in 2025. That rise has brought heavier regulatory pressure to the crypto sector, with stablecoin issuers and blockchain platforms being pushed to tighten compliance procedures and oversight. Tether CEO Paolo Ardoino said compliance is a commitment to protecting users and preventing crime, adding that the $450 million threshold shows only the initial capacity of the T3 unit.
Blacklist powers reignite the centralization debate
Separate on-chain analysis from BlockSec showed that more than $500 million USDT was frozen in just the past month, a figure above T3’s own disclosure. The data suggests that Tether is actively blacklisting addresses across multiple blockchains.
That has revived a familiar debate. Centralized stablecoin issuers such as Tether can freeze funds and blacklist wallets at the issuance layer, while decentralized assets such as Bitcoin do not give an issuer that kind of direct control. Law enforcement agencies and regulators have praised the speed of these interventions, but the same mechanism continues to raise questions inside the blockchain community about how much power centralized issuers retain over on-chain assets.