---
title: "Ethereum delays Glamsterdam test after security devs flag risk to existing contracts"
description: "2026-10-23にCoinDesk, Cointelegraphが報道。検知後1時間でETH +0.24%。 CoinDesk: “Developers canceled Monday's Hoodi activation after researchers showed how new gas rules could let smart contracts permanently record failed operations.” 検知後1時間でETHは+0.24%変動。価格観測は因果関係を証明しません。"
language: ja
canonical: "https://whycoinmoves.com/ja/events/ethereum-ethereum-delays-glamsterdam-test-after-c241dfc26e7def"
published: 2026-10-23T05:07:19.000Z
updated: 2026-10-23T06:08:29.000Z
indexable: false
---

# Ethereum delays Glamsterdam test after security devs flag risk to existing contracts

2026-10-23にCoinDesk, Cointelegraphが報道。検知後1時間でETH +0.24%。 CoinDesk: “Developers canceled Monday's Hoodi activation after researchers showed how new gas rules could let smart contracts permanently record failed operations.” 検知後1時間でETHは+0.24%変動。価格観測は因果関係を証明しません。

Attributed sources: [CoinDesk](<https://www.coindesk.com/tech/2026/10/23/ethereum-delays-glamsterdam-test-after-security-devs-flag-risk-to-existing-contracts>), [Cointelegraph](<https://cointelegraph.com/news/ethereum-delays-glamsterdam-testnet-fork-gas-security-risks>)

## Key facts

CoinDesk: “Developers canceled Monday's Hoodi activation after researchers showed how new gas rules could let smart contracts permanently record failed operations.” 検知後1時間でETHは+0.24%変動。価格観測は因果関係を証明しません。
Evidence strength: 複数メディア報道, 2 publisher group(s) (CoinDesk, Cointelegraph); this describes source coverage, not truth or causation.
検知後の観測リターン：5分: +0.18% (BTC比差 +0.08 pt; 23/10/2026, 05:07 → 23/10/2026, 05:12, UTC; Gate · USDT)；1時間: +0.24% (BTC比差 +0.11 pt; 23/10/2026, 05:07 → 23/10/2026, 06:08, UTC; Gate · USDT)。記載のない時間枠は未取得です。
直近30日間の時間足絶対リターンの99パーセンタイルは1.46%（OKX · USDT；基準 23/10/2026, 05:07, UTC）です。時間足基準は分単位の変動と直接比較できません。

## Returns after site detection

| Window | Return | BTC | Difference from BTC | Actual sampled interval (UTC) | Source |
| --- | --- | --- | --- | --- | --- |
| 5分 | +0.18% | +0.11% | +0.08 pt | 23/10/2026, 05:07 → 23/10/2026, 05:12 | Gate · USDT |
| 1時間 | +0.24% | +0.13% | +0.11 pt | 23/10/2026, 05:07 → 23/10/2026, 06:08 | Gate · USDT |
| 24時間 | — | — | — | — | — |

## Historical hourly baseline

| Metric | Value |
| --- | --- |
| Ready | true |
| Coverage | 100.0% (720/720) |
| Median absolute hourly return | 0.19% |
| 99th percentile of absolute hourly returns | 1.46% |
| BTC beta | 1.19 |
| Source / cutoff (UTC) | OKX · USDT / 23/10/2026, 05:07 |

## Claims and open questions

- No independently verified causal explanation is available.

## Source evidence

- [Ethereum delays Glamsterdam test after security devs flag risk to existing contracts](<https://www.coindesk.com/tech/2026/10/23/ethereum-delays-glamsterdam-test-after-security-devs-flag-risk-to-existing-contracts>) — CoinDesk; published 23/10/2026, 04:59; received 23/10/2026, 05:07 (UTC).
- [Ethereum delays Glamsterdam Hoodi testnet launch over security risks](<https://cointelegraph.com/news/ethereum-delays-glamsterdam-testnet-fork-gas-security-risks>) — Cointelegraph; published 23/10/2026, 05:09; received 23/10/2026, 05:13 (UTC).


## Recent ETH events and market reactions

公開基準を満たした他のETHイベントはまだありません。

- [Full coin archive](<https://whycoinmoves.com/ja/coins/ethereum>)

## Research for this archive

- [Altcoin beta to Bitcoin: BTC, ETH, SOL and DOGE hourly returns](<https://whycoinmoves.com/ja/research/hourly-returns-and-bitcoin-beta.md>)
- [Perpetual funding rates and annualized yield: a 2025 comparison](<https://whycoinmoves.com/ja/research/funding-rates-versus-investor-returns.md>)
- [Crypto listing and delisting effects: an OKX price study](<https://whycoinmoves.com/ja/research/exchange-listing-and-delisting-price-reactions.md>)
- [XRP lawsuit and Ethereum ETFs: reading SEC filings and rulings](<https://whycoinmoves.com/ja/research/regulatory-filings-versus-media-headlines.md>)

[Methods and limitations](<https://whycoinmoves.com/ja/methodology>)
Publisher count is not independent evidence count. Price changes cannot verify news or prove causation.