---
title: "Bitcoin wallet bug let rogue servers steal funds when users tried to speed up payments"
description: "2026-10-26にCoinDeskが報道。検知後1時間でBTC +0.07%。 CoinDesk: “Attackers replaced legitimate transactions with fake ones, then waited for users to approve higher fees. At least one person lost bitcoin before developers patched the flaw.” 検知後1時間でBTCは+0.07%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/bitcoin-bitcoin-wallet-bug-let-rogue-99bbc6c1457d74"
published: 2026-10-26T05:17:58.000Z
updated: 2026-10-26T06:18:03.000Z
indexable: false
---

# Bitcoin wallet bug let rogue servers steal funds when users tried to speed up payments

2026-10-26にCoinDeskが報道。検知後1時間でBTC +0.07%。 CoinDesk: “Attackers replaced legitimate transactions with fake ones, then waited for users to approve higher fees. At least one person lost bitcoin before developers patched the flaw.” 検知後1時間でBTCは+0.07%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/2026/10/26/bitcoin-wallet-bug-let-rogue-servers-steal-funds-when-users-tried-to-speed-up-payments>)

## Key facts

CoinDesk: “Attackers replaced legitimate transactions with fake ones, then waited for users to approve higher fees. At least one person lost bitcoin before developers patched the flaw.” 検知後1時間でBTCは+0.07%変動。価格観測は因果関係を証明しません。
Evidence strength: 単一情報源, 1 publisher group(s) (CoinDesk); this describes source coverage, not truth or causation.
検知後の観測リターン：5分: +0.08% (26/10/2026, 05:17 → 26/10/2026, 05:22, UTC; Gate · USDT)；1時間: +0.07% (26/10/2026, 05:17 → 26/10/2026, 06:17, 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1.01%（OKX · USDT；基準 26/10/2026, 05:17, 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 | +0.08% | +0.08% | 0.00 pt | 26/10/2026, 05:17 → 26/10/2026, 05:22 | Gate · USDT |
| 1時間 | +0.07% | +0.07% | 0.00 pt | 26/10/2026, 05:17 → 26/10/2026, 06:17 | Gate · USDT |
| 24時間 | — | — | — | — | — |

## Historical hourly baseline

| Metric | Value |
| --- | --- |
| Ready | true |
| Coverage | 100.0% (720/720) |
| Median absolute hourly return | 0.14% |
| 99th percentile of absolute hourly returns | 1.01% |
| BTC beta | 1.00 |
| Source / cutoff (UTC) | OKX · USDT / 26/10/2026, 05:17 |

## Claims and open questions

- No independently verified causal explanation is available.

## Source evidence

- [Bitcoin wallet bug let rogue servers steal funds when users tried to speed up payments](<https://www.coindesk.com/tech/2026/10/26/bitcoin-wallet-bug-let-rogue-servers-steal-funds-when-users-tried-to-speed-up-payments>) — CoinDesk; published 26/10/2026, 05:15; received 26/10/2026, 05:17 (UTC).


## Recent BTC events and market reactions

公開基準を満たした他のBTCイベントはまだありません。

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

## 関連リサーチ

- [Crypto hacks and price impact: Bybit and Cetus case studies](<https://whycoinmoves.com/ja/research/crypto-security-exploits-and-evidence-evolution.md>)
- [Why is crypto moving? How to check the evidence behind a price explanation](<https://whycoinmoves.com/ja/research/how-to-check-why-crypto-is-moving.md>)
- [Altcoin beta to Bitcoin: BTC, ETH, SOL and DOGE hourly returns](<https://whycoinmoves.com/ja/research/hourly-returns-and-bitcoin-beta.md>)
- [Will Bitcoin go back up? Every crash since 2011 and its recovery time](<https://whycoinmoves.com/ja/research/bitcoin-crash-recovery-time.md>)

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