Article Summary
Today the network was attacked by a transaction spam attack that repeatedly called the EXTCODESIZE opcode (see trace sample here), thereby creating blocks that take up to 20-60 seconds to validate due to the 50,000 disk fetches needed to process the transaction. The result of this was a ~2-3x reduction...
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Published:September 22, 2016 at 09:31 PM
Source:Ethereum Foundation Blog
Category:Crypto
Reading Time:~2 min on source