The BNB Chain — the blockchain operated by the world’s largest crypto exchange, Binance Global inc. — has suspended operation as developers have identified a potential exploit on the network, according to an official Binance Twitter account.
Changpeng Zhao, Binance's chief executive, said on Twitter
that the issue involved BSC Token Hub, a so-called cross-chain bridge. These
enable the transfer of digital assets and information from one independent
blockchain to another. “The issue is contained now. Your funds are safe,"
Zhao wrote, apologising for the inconvenience.
The BSC Token Hub is used to facilitate cross-chain
transactions between BNB Beacon Chain and Binance Smart Chain. As such, the
exploit resulted in the loss of extra Binance Coins (BNB). However, all
validators on the network have been asked to suspend the Binance smart chain.
Although users remain worried about their funds, CZ
maintained that all funds were safe and that the public will be updated with
more details going forward.
An exploit on a cross-chain bridge, BSC Token Hub, resulted in extra BNB. We have asked all validators to temporarily suspend BSC. The issue is contained now. Your funds are safe. We apologize for the inconvenience and will provide further updates accordingly.
— CZ 🔶 Binance (@cz_binance) October 6, 2022
Two hours before Zhao's tweet, the official Binance Twitter
account wrote that BNB Chain was under maintenance and apologised for the
inconvenience. "We will suspend all deposits and withdrawals via BNB Chain
temporarily until there are further updates," Binance wrote.
Additionally, Binance confirmed on Reddit that around $100
million to $110 million worth of funds had initially been moved from the BNB
Chain. However, after alarming feedback from security officials and community
members, Binance confirmed that funds worth $7 million have been frozen.
According to blockchain security firm SlowMist, the exploit
allowed cybercriminals to get away with over $570 million in digital assets,
including Ether, Polygon, BNB Coin, Avalanche, Fantom, Arbitrum, and Optimism.
"The attacker is spewing funds across liquidity pools
and utilizing every bridge they can to get to safer chains," blockchain
developer @0xfoobar tweeted, adding that there was "complete chaos on the
chain."
Over half a BILLION dollars worth of $BNB was recently hacked.
— SlowMist (@SlowMist_Team) October 6, 2022
The hacker is now trying to spread the funds to every network to launder the funds. pic.twitter.com/LT5rRnIHWe
The final total value involved in the hack has yet to be
determined.
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