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Ledger wallet security alert: Mt Gox ex-CEO starts developing detection device

Mark Karpeles, former CEO of Mt Gox, is developing a low-cost detector to check whether Ledger hardware crypto wallets contain malicious components. The move follows reports of tampered Ledger devices carrying parts that could steal 24-word recovery phrases, raising supply-chain security concerns. Karpeles says the device would use low-power wireless signals and resonance tests, and he may publish PCB designs and specifications. No working unit or independent verification has been released.