Security Teams Flag Contract Risks, Prompting Ethereum to Delay Glamsterdam Test Upgrade

Ethereum's development community has delayed the testnet rollout of its Glamsterdam upgrade. The move followed warnings from security reviewers about potential risks to existing smart contracts, according to reporting from CoinDesk and CryptoBriefing. Glamsterdam is one of the network's planned forward upgrades, part of the ongoing cadence of protocol changes that follow major releases like Pectra and Fusaka. Ethereum typically ships upgrades through a multi-stage process. Changes first run on public testnets, then move to mainnet once developers are confident the code is stable and safe. The delay reflects that process working as intended, rather than a failure of it.