Researcher says Ledger received hardware implant report months ago

PANews October 17 news, according to Cointelegraph, former Mt.Gox CEO Mark Karpelès said that at least two people reported tampered devices to Ledger as early as December 2025. Security researcher Joe Grand also said that on March 4, 2026, he reported to Ledger that a Nano X contained a malicious hardware implant, and Ledger confirmed his findings and said it was conducting an internal investigation. Both questioned whether Ledger failed to promptly warn customers publicly. Ledger declined to comment further on how it handled Grand's report and directed the media to its public statement on X.