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Allbridge suffered a loss of approximately $1.65 million due to a flash loan attack, and the cross-chain protocol has been suspended

According to Decrypt, the cross-chain bridge protocol Allbridge has suspended its Core protocol due to a flash loan attack, with the attacker having stolen approximately $1.65 million in assets from the Solana stablecoin liquidity pool.According to analysis by blockchain security firms PeckShield and CertiK, the attacker borrowed $1.12 million in flash loan funds through the Solana lending protocol Kamino, and then manipulated the price mechanism within the Allbridge pool through multiple stablecoin exchange operations to exchange assets at a low price, subsequently transferring the funds across chains to an Ethereum address.During the attack, the attacker exchanged several thousand dollars in USDT to obtain approximately $2.24 million in USDC, and then bridged the funds to Ethereum for further dispersal. It is currently unclear whether some of the funds can still be recovered.Allbridge stated that the team has suspended the Core protocol for security reasons and has requested affected liquidity providers to withdraw their funds immediately. Due to the attack causing an imbalance in the liquidity pool, some traders profited from arbitrage opportunities. Allbridge has called on relevant users to return their profits, stating that the funds will be used to compensate affected LPs.The team indicated that there is no further risk to user funds at this time and will release a detailed incident analysis report after completing the investigation, while also planning to relaunch the Core protocol after removing the liquidity pool. This is the second time Allbridge has encountered a similar flash loan attack. In April 2023, the protocol's BNB Chain liquidity pool suffered a loss of approximately $573,000 due to a similar vulnerability, after which the project team stated that they had recovered most of the funds and adjusted the liquidity calculation mechanism.

Cambridge Research: The United States hosts about 31% of Ethereum nodes, with over 1/3 of the nodes offline or affecting final confirmation

The latest research from the Cambridge Centre for Alternative Finance shows that approximately 31% of Ethereum node activity is located in the United States, with about 39% distributed in the EU region excluding the UK, indicating that the geographical distribution of Ethereum nodes is still relatively concentrated in Western countries. The research leader, Alexander Neumuller, stated that the current node distribution is not concentrated in a single country but primarily relies on a few cloud service providers, including Hetzner, Amazon AWS, and OVH.It is noteworthy that the Ethereum network does not require half of the validators to fail for issues to arise; when more than one-third of validators go offline simultaneously, the network may be unable to complete the finalization of block checkpoints. Neumuller pointed out that nodes and validators do not have a one-to-one correspondence; a single node may run multiple validators, making it currently impossible to accurately assess the actual impact of a specific node or service provider failure on the validation network. Additionally, the research reassessed the energy consumption situation after Ethereum's Merge. The data shows that Ethereum's current annual energy consumption is approximately 7.9 GWh, equivalent to about 1 megawatt of continuous power, which is only about 0.02% of the pre-Merge level, with energy consumption decreasing by approximately 99.98%. Currently, the proportion of sustainable energy used by the Ethereum network exceeds 56%, higher than the global average. The research also pointed out that the concentration of client software is another potential risk; if a dominant client has a vulnerability, it could affect a large number of network participants. The report was published by the Cambridge Centre for Alternative Finance, with support from the Ethereum Foundation.
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