Ethereum developers canceled Monday's Hoodi activation of the Glamsterdam test after security developers flagged a risk to existing contracts. According to the supplied account, researchers showed how new gas rules could let smart contracts permanently record failed operations.
The concern centers on the change to gas rules and its interaction with existing contracts. Researchers demonstrated that the new rules could allow smart contracts to permanently record failed operations, prompting the cancellation of the scheduled Hoodi activation.
The activation had been set for Monday on Hoodi. No new date or further technical details were provided.