Stablecoin issuers Circle and Tether have frozen over $65 million in assets tied to the suspected exploit of cross-chain router protocol Multichain. The move follows unexplained large outflows from the Multichain MPC bridge on July 6.
According to the knowledge graph protocol 0xScope, three addresses that received at least $63.2 million in USD Coin (USDC) from Multichain are now frozen. Another report from the Fantom Foundation notes that more than $2.5 million in Tether (USDT) had also been frozen from two addresses listed by Etherscan as "Multichain Suspicious Addresses".
Over $125 million worth in cryptocurrencies were withdrawn from multiple wallets on July 6, affecting Multichain’s Fantom bridge, as well Dogechain, Moonriver, Kava and Conflux's ecosystems. The cause of the abnormal transfer of assets remains unclear.
Update: Tether has frozen these accounts with >2.5m USDT on Ethereum transferred from Multichain:https://t.co/bFYACtQ7t6https://t.co/zlRybitcJCThank you @Tether_to and the team for your quick response.
On Twitter, Multichain announced it was suspending current services, without specifying a return date. "Please don’t use the Multichain bridging service now," it warned, adding that "all bridge transactions will be stuck on the source chains."
Fantom protocol CEO Michael Kong reportedly said that the transfer of funds "does not appear to be a normal hack", since the assets sent to the alleged attacker's wallets were not transferred elsewhere. Investigations are still ongoing.
Multichain allows users to transfer tokens between different networks. It has been facing technical and operational challenges since its leadership vanished a few weeks ago. Bridges like Multichain are among the most vulnerable targets
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