In a swift coordinated response to large, unexplained movements of funds, the issuers of the world’s two dominant dollar-pegged stablecoins acted within minutes of each other on October 29, 2026.
Tether blacklisted addresses holding roughly $971 million in USDT, while Circle followed by freezing $823 million in USDC. Together the actions immobilized approximately $1.8 billion in tokens that on-chain trackers associate with outflows from Binance-labeled hot wallets. The episode has triggered sharp price swings in related assets and renewed debate over the centralized controls built into major stablecoins.
The freeze was confirmed by multiple onchain trackers and officially quoted by Binance co-founder and former CEO Changpeng Zhao (CZ) on X. “It does look like a hack on Binance. Appreciate the quick freeze from Tether (~$971m) and Circle (~$823m),” CZ said.
Tether CEO Paolo Ardoino also shared on X that the company froze more than $1.567 billion in USDT tied to a potential Binance exchange hack. “Protecting the industry and our partners is our main priority,” he said.
Rapid Freezes Halt Majority of Suspected Outflows
Reports circulating on social media and blockchain monitoring channels indicate that Binance hot wallets began sending large sums earlier in the evening UTC. One sequence described approximately $1.675 billion in USDT moving to a fresh address, followed by $823 million in USDC landing in the same or closely linked wallets.
At roughly 21:01 UTC, Tether added the primary address to its USDT blacklist, locking the tokens still held there. Circle executed its own blacklist transaction minutes later, freezing the $823 million USDC balance.
However, not all funds were caught. Trackers noted that roughly $700 million in USDT had already left some addresses before the freeze took effect; portions of that amount were swapped into ETH via decentralized venues such as UniswapX. One subsequently blacklisted wallet was reported to hold more than 100,000 ETH, an asset neither issuer can freeze.
Separate monitoring accounts put total outflows in the $2–3 billion range and stated that the combined freezes captured a substantial share of the stablecoin portion. Binance had not issued an official statement confirming a security incident, internal transfer, or other explanation by late evening UTC. Earlier the same day, market observers had already flagged large Binance-related movements and a related dip that produced hundreds of millions in liquidations.
Market Reaction and Questions About Centralized Controls
The news coincided with a sharp drop in BNB, which fell from the mid-$740s toward the $670s within roughly 30 minutes before partially recovering-as per live data recorded on CoinGecko. Broader crypto markets also reacted to the combination of large outflows and the subsequent freezes.
While the exact nature of the movements remained unconfirmed, the speed of the issuer response underscored a recurring feature of the current stablecoin landscape: both Tether and Circle maintain blacklist functions in their token contracts that allow them to prevent transfers from designated addresses.
Historical data show Tether has executed far more freezes by both count and dollar value than Circle, including numerous seizures that permanently remove balances; Circle’s freezes have generally locked tokens in place without destroying them.
The incident also revived comparisons with prior cases in which stablecoin freezes recovered only a fraction of stolen value once attackers moved quickly into non-freezable assets such as native ETH or Bitcoin.
As of late October 29, the situation remained fluid. On-chain data continued to be parsed by independent analysts, and market participants watched for any formal communication from Binance. Until greater clarity emerges on whether the outflows represent a security breach, an internal movement, or another cause, the dual freezes stand as one of the largest single-day stablecoin immobilizations on record and a vivid illustration of the enforcement powers concentrated with the two largest issuers.
Also read: Conduit Files Suit Against Tether Over Frozen $2.76 Million USDT