Binance investigates multibillion-dollar security breach

Binance is investigating a potential multibillion-dollar security breach that is estimated to have impacted $6.3 billion in funds.

Binance is investigating a potential multibillion-dollar security breach involving one of its Ethereum wallets, after suspicious transfers prompted stablecoin issuers Tether and Circle to reportedly freeze billions in assets.

A Binance spokesperson told Cointelegraph on Thursday that the exchange was investigating reports of a potential security issue but had not confirmed any impact on user funds. The spokesperson said its security teams were reviewing the activity and would provide updates once more information was verified.

Concerns were first raised by blockchain researcher Spreek, who posted on X that assets from a Binance-linked Ethereum wallet had been transferred to a newly created address through a contract call allegedly funded by Tornado Cash. Spreek later reported that wallets connected to the transfers had begun selling Tether USDt (USDT) through decentralized exchanges.

Blockchain analytics platform Arkham Intelligence later identified a collection of wallets labeled “binance-hacker-1029” holding approximately $5.84 billion in digital assets. The figure represents the wallets’ reported holdings rather than a confirmed estimate of stolen funds.

Binance co-founder Changpeng Zhao said the activity appeared to be a hack, adding that Tether and Circle had frozen approximately $971 million and $823 million, respectively. Zhao said he expected all user funds to be fully covered.

Source: Arkham Intelligence

Tether, Circle freeze over $2.36 billion

Blockchain security firm Blockaid said its team had identified roughly $3.3 billion in suspicious transfers involving Binance-linked wallets across Ethereum, Arbitrum and Avalanche.

Shortly after news of the hack emerged, Tether and Circle, the two largest stablecoin issuers by market capitalization, said they had frozen a combined $2.36 billion in tokens linked to the suspected incident.

Circle CEO Jeremy Allaire said the company had frozen more than $800 million in USDC in coordination with law enforcement and would continue supporting the investigation.

A few minutes later, Tether CEO Paolo Ardoino said the company had frozen more than $1.567 billion in USDT linked to the potential exploit.

“Protecting the industry and our partners is our main priority,” Ardoino wrote.

Source: Paolo Ardoino

The Binance hack came hours after Polymarket temporarily halted trading following a compromise at a third-party provider. The prediction market platform said it had fixed the issue and pledged to reimburse affected users, with all systems reported operational by 7:05 p.m. UTC Thursday.

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