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According to Cointelegraph, a cross-chain bridge between BitBTC and the Ethereum layer-2 network Optimism has been able to avoid a potentially costly exploit thanks to the work of a Twitter user. The BitBTC bridge bug was highlighted by L2 network Abirtrum tech lead Lee Bousfield in an Oct. 18 Twitter post, warning that “BitBTC's Optimism bridge is trivially vulnerable.” According to Bousfield, the BitBTC bridge had a bug that would allow an attacker to mint fake tokens on one side of the bridge, and swap them for real ones on the other. An attacker attempting to withdraw “200 billion fake BitBTC from Optimism.” The attacker claimed that it was merea test. Optimism developer Kevin Fichter on Oct. 18 confirmed that the bug was on BitBTC’s side of things as it had used its own custom bridge as opposed to Optimism’s standard bridge it offers to partners. Fichter also noted that assets “other than BitBTC are not at risk,” and encouraged people to use the standard bridge.

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【Twitter user saves cross-chain bridge from potential exploit】According to Cointelegraph, a cross-chain bridge between BitBTC and the Ethereum layer-2 network Optimism has been able to avoid a potentially costly exploit thanks to the work of a Twitter user. The BitBTC bridge bug was highlighted by L2 network Abirtrum tech lead Lee Bousfield in an Oct. 18 Twitter post, warning that “BitBTC's Optimism bridge is trivially vulnerable.” According to Bousfield, the BitBTC bridge had a bug that would allow an attacker to mint fake tokens on one side of the bridge, and swap them for real ones on the other. An attacker attempting to withdraw “200 billion fake BitBTC from Optimism.” The attacker claimed that it was merea test. Optimism developer Kevin Fichter on Oct. 18 confirmed that the bug was on BitBTC’s side of things as it had used its own custom bridge as opposed to Optimism’s standard bridge it offers to partners. Fichter also noted that assets “other than BitBTC are not at risk,” and encouraged people to use the standard bridge.

Twitter user saves cross-chain bridge from potential exploit

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