Tether has frozen more than $344 million in USDT across two wallets on the Tron blockchain in coordination with the U.S. Office of Foreign Assets Control (OFAC) and federal law enforcement agencies, the company confirmed on April 23.
The action marks the largest single compliance operation in the stablecoin issuer’s history and follows intelligence from U.S. authorities linking the wallets to sanctions evasion and criminal networks.
Two Tron wallets, $344M frozen
Blockchain security firm PeckShield was the first to report the onchain freeze, identifying the two blacklisted addresses, TNiq9…QZH81 and TTiDL…pjSr9, before Tether issued a formal statement. One wallet held approximately $212.9 million in USDT and the other around $131.3 million. Both addresses were publicly visible on Tron block explorers before the freeze was executed.
Blockchain analytics firm AMLBot noted that both addresses had appeared in scam-related documents and social media posts. Investigators linked one address to a fake $75 billion contract and the other to a Bitcoin-for-USDT scheme that promised victims a 10% instant return, a signature red flag in fraud targeting crypto users.
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Once U.S. authorities shared the intelligence, Tether restricted both wallets at the smart contract level, rendering the funds inaccessible and preventing further movement.
Part of a wider enforcement pattern
Tether CEO Paolo Ardoino was unambiguous in the company’s statement: “USDT is not a safe haven for illicit activity. When credible links to sanctioned entities or criminal networks are identified, we act immediately and decisively.” He added that recent events across the industry have shown what happens when platforms fail to move quickly, enforcement breaks down and user trust erodes.
The April 23 freeze is the latest in a string of increasingly large enforcement actions by Tether. In November 2023, the company froze roughly $225 million in USDT linked to a Southeast Asia human-trafficking and pig butchering investigation, a type of fraud where perpetrators cultivate fake relationships with victims before funneling their savings into fraudulent crypto platforms.
The U.S. Department of Justice publicly acknowledged Tether’s role in that case, and in a separate action, also credited the company for helping recover nearly $61 million tied to similar schemes. A second large-scale freeze in January 2026 blacklisted approximately $182 million across five Tron wallets. The $344 million April action nearly doubles that record.
Tether says it now works with more than 340 law enforcement agencies across 65 countries and has supported over 2,300 cases globally, of which more than 1,200 involve U.S. authorities. Those cases have collectively resulted in the freezing of more than $4.4 billion in assets, with over $2.1 billion directly connected to U.S. investigations.
A turbulent April for crypto security
The freeze comes against a backdrop of high-profile crypto exploits in April 2026. On April 1, the decentralized exchange Drift Protocol suffered a $285 million exploit widely attributed by investigators to North Korean state-backed hackers.
The attack ignited debate over how quickly stablecoin issuers should act to freeze funds following a known exploit. Critics argued that Circle, issuer of rival stablecoin USDC, was slow to respond, with Circle stating it only takes freezing action when legally required or directed by law enforcement.
A separate $292 million exploit of KelpDAO, also linked to North Korean hackers, compounded the scrutiny on platform security across the industry.
Tether responded to the Drift situation directly. On April 16, the company announced it would lead a $150 million recovery plan to help restore user funds and support Drift’s relaunch on Solana, with the platform switching its primary settlement asset from USDC to USDT.
That decision brought more than 128,000 users onto USDT-based trading on one of Solana’s largest perpetual venues.
The bigger picture: stablecoins as compliance infrastructure
The $344 million freeze reinforces a growing tension within the digital asset industry. Tether can freeze wallets in a single compliance action, making locked assets inaccessible while keeping them visible on the public blockchain.
That traceability, every transaction trackable, every wallet flaggable before funds disperse, is precisely what makes USDT valuable to law enforcement and controversial among decentralization advocates.
On X, Bitcoin proponents were quick to note that the freeze illustrates why centralized stablecoins carry custodial risk that fully decentralized assets do not.
The Financial Action Task Force (FATF) recently warned that stablecoins are increasingly being weaponized for sanctions evasion and money laundering, adding regulatory weight to the expectation that issuers take an assertive compliance role.
For Tether, the April 23 action positions USDT not just as the world’s most widely used dollar-pegged token, but as an active enforcement instrument, one capable of delivering a level of real-time financial accountability that most traditional institutions are still working to match.
