Mark Karpelès, the former CEO of the collapsed Bitcoin exchange Mt. Gox, says Ledger was warned about malicious hardware implants months before its latest security crisis. By his account, the French hardware wallet maker received more than one such report. Cointelegraph published his claims on Oct 16, 2026.
Karpelès is questioning how Ledger handled those warnings. He says the reports called for more action than the company took. The available text does not say what Ledger actually did after receiving them.
Several things are still unknown from the report. It does not say who sent the warnings, exactly when they arrived, how many devices may be affected, or whether anyone lost funds. It also gives no reply from Ledger and does not describe the latest crisis in detail.
For anyone already holding a perpetual position on Bitget, Bybit, MEXC or OKX, this changes nothing directly. The story is about hardware wallets used to store coins outside exchanges, not about exchange margin accounts. Nothing in the report concerns funding rates, trading fees or order-book liquidity.
Source: cointelegraph — Ledger’s early implant warnings deserved more action, Karpelès says
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