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Ethereum schedules Oct 6 test for Glamsterdam upgrade, warns of potential builder identity attacks.

Protocol Fundamentals
18 Sep 2026
Blockonomi
View Source
Neutral
Ethereum schedules Oct 6 test for Glamsterdam upgrade, warns of potential builder identity attacks.

Ethereum developers have planned a test on Oct. 6 for the Glamsterdam upgrade on the Sepolia testnet, aiming to increase block gas limits to around 200 million for higher network capacity. However, they warned about possible disruptions from fake builder identities that could win block auctions and withhold transaction data, potentially freezing testnet traffic and delaying upgrade validation. Developers are working on stronger controls to identify and block malicious builders more effectively. Client teams must release Sepolia-ready software by Sept. 29, with a public Hoodi test tentatively set for Oct. 27; the mainnet launch date remains unscheduled.

Ethereum's upcoming Glamsterdam upgrade test on the Sepolia testnet is noted alongside Pluang's market data as of Sep 18, 2026 13:31 WIB. For readers following cryptocurrency markets, 45 of 50 major cryptocurrencies traded on Pluang rose today while 4 fell. Notable movers include AXS at Rp17.890 with a 1-day change of +8.71% and Pluang order activity of 94% Sell / 6% Buy, CAKE at Rp44.013 with +8.33% change and 57% Sell / 43% Buy activity, and THETA at Rp3.448 with +8.22% change and 0% Sell / 100% Buy activity. Typical hold times range from 62 to 77 days among these assets.

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