Ledger has confirmed finding an unauthorized hardware implant inside one customer's cryptocurrency wallet during its investigation into reported thefts involving Southeast Asian reseller CryptoBilis. The implant is believed to have been used to steal cryptocurrency, with estimated losses exceeding $86 million. Ledger has advised customers with CryptoBilis devices against setting up their wallets and recommended fresh recovery phrases for others. The company is working with authorities to investigate the incident and is developing additional protections against physical device tampering.