#extcodesize2 articles

2 articles

CryptoBearishEthereum Foundation Blog · Sep 22🔥 8/101

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The Ethereum network is currently undergoing a DoS attack

The Ethereum network is experiencing a computational denial-of-service attack targeting miners and nodes through the EXTCODESIZE opcode. The attack exploits a vulnerability where certain blocks require excessive processing time despite low gas prices, causing network disruption.

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CryptoBearishEthereum Foundation Blog · Sep 226/101

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Transaction spam attack: Next Steps

A transaction spam attack targeted the network using EXTCODESIZE opcode calls, causing blocks to take 20-60 seconds to validate due to excessive disk fetches. This resulted in a 2-3x reduction in network performance as validators struggled to process the malicious transactions.