[Glamsterdam Test: Attackers Could Exploit Free Testnet ETH to Win Sepolia Block Auctions and Withhold Transaction Payloads] Odaily Planet Daily reports that Ethereum developers have warned attackers could exploit free testnet ETH and one-time builder identities to win Sepolia block auctions and withhold transaction payloads during the Glamsterdam test. This attack does not pose a threat to mainnet funds but could disrupt infrastructure testing. The Sepolia public test is scheduled to launch on October 6, while the Hoodi test is tentatively set for October 27. The mainnet activation date remains undetermined. (CoinDesk)